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Debate: Four articles give a different answer to National Geographics
November cover question, Was Darwin Right?
See 10/24/2004 headline update.
China: Where Evolution Destroys Human Rights 11/30/2004
According to World Magazine,
China is cracking down on what it calls evil teachings, i.e., religious
beliefs and superstition contrary to the official atheist position of the
communist government. Christians in unregistered house churches have noticed a
crackdown since May 27, when an internal document leaked to the West called
for harsher measures against non-atheists. Entitled Notice on Further
Strengthening Marxist Atheism Research, Propaganda and Education, one of its
provisions clarified Chinas position on the creation-evolution debate:
Aiming at the phenomenon of fatuity and superstition,
which exists among some people, we shall strengthen the research, propaganda
and education of natural science, particularly the basic knowledge about life,
the rule on human evolution, and correctly deal with various natural phenomena,
natural disasters, birth, aging, disease and death....
To publicize Marxist atheism, we shall positively use films, TV programs,
books, electronic publications, and other things to peoples taste, and firmly ban
all illegal publications, which disseminate superstitions and evil teachings.
While one of the provisions calls for freedom of religious belief, to respect
peoples freedom to believe religion or not believe religion, what this
means in practice that the people are to keep their beliefs to themselves and not
try to influence others. Statements like this are intended to hoodwink the
Western world into believing China respects human rights. Where the government will make the distinction is
between belief and expression, explained an American human rights official.
A 34-year-old Christian found that out when handing
out Bibles and gospel tracts in a marketplace in central China. On June 17
she was arrested, and the next day she was dead, World reports.
Autopsy pictures showed her body badly bruised and beaten. Police ordered her
body cremated within three days, her husband said, in an attempt to cover up evidence
of the killing. Her death, Mr. [Bob] Fu [president of Texas-based China Aid]
believes, was a direct result of local officials following the Central Committee directive.
Since May 27, additional directives have given orders for disciplining officials who convert
to Christianity, cracking down on churches in coastal and central provinces, and prohibiting
religious observances on university campuses.
World points out that abuses will continue if
human rights issues are decoupled from US trade policy with China.
Except for the torture, killing and banning of books,
this sounds like Eugenie Scotts perfect society. Most of it is already
here in America: especially the movies, books and TV programs to the peoples
taste just watch the weekly fare on the Science Channel and PBS.
The Darwin Party in
America must feel a deep bond with Chinas goals: to perpetuate the false dichotomy between science and
religion; to equate science with naturalism; to equate religion with supersitition; to tell
people to keep their religious beliefs to themselves and outside of the natural world;
and to strengthen
research, propaganda and education of natural science (thats a
euphemism for naturalistic philosophy), particularly the basic knowledge about
[the origin and evolution of] life, the rule on human evolution.
(Only someone born yesterday wouldnt know that Darwinism is the official
Marxist interpretation of the world, from molecules to man.) Sounds great,
doesnt it, Eugenie and Ken? Why dont you both move there so you
can live happily ever after?
Know your world history. Know what happened under Lenin and Stalin,
when churches were converted into museums of atheism and pastors were taken out of
their homes without warning and sent to the Gulag for years at a time, their
homes seized and their families left destitute.
Picture the suffering Christians in Siberia doing hard
labor in the cold, dying of starvation, merely for sharing good news: For God
so loved the world, that He gave His only begotten Son.... Remember
Georgi Vins and Richard Wurmbrand. Its not just history; it is now,
in every remaining Marxist dictatorship on earth, where Darwinian evolution is the
official state dogma, and the justification for their political philosophy.
Innocent as some of the directives sound, those familiar with communist
phraseology will get a chill when reading between the lines. Visualize what
these things mean to a communist government official who views man as a social animal,
a product of evolution, with no individual rights, whose only purpose is to further
the evolution of the state: we shall ... correctly deal with various natural
phenomena, natural disasters, birth, aging, disease and death.
(See 11/07/2002 and
03/06/2002 commentaries.)
Next headline on:
Politics and Ethics
Movies and Media
Swedish Poets Serenade Vegans 11/30/2004
Lest someone think by the title that Swedes are befriending vegetable lovers, the
Vegans are aliens that might live on a planet around the star Vega. According
to Reuters,
some Swedish poets in Stockholm beamed their verse to the star on November
16. A spokesman justified the action by saying, I cant
think of anything more adequate than poetry to communicate what it means to be
human. (Since Vega is 25 light-years away, any hope for a response will have to
wait till 2054).
The answer: Can I borrow your recipe for
Swedish meatballs? Or perhaps, Wiolets are bloo, rozhes are red,
we more advanshed dan yoo, we know Darwin izh dead.
Send your contribution here.
Next headline on:
SETI
Dumb Ideas
Dark Matter: What Could It Be?
11/30/2004
Four European cosmologists, writing in the 26 November issue of Science,1
discussed the leading candidates for dark matter. One is a WIMP (not the scientist,
but the candidate particle; it stands for weakly interacting
massive particle) named a neutralino. The other is called an axion. Neither of these
theoretical entities has yet been detected in particle accelerators (see
05/10/2004 headline), but the authors
claim there might be some indirect evidence. In closing, they say,
The astrophysical observations discussed here indicate that axions and neutralinos
may have been abundantly produced in the early universe and/or inside stars.
These two types of particles remain the favorite candidates for dark matter and
other celestial phenomena. As ever more sensitive detectors are built, more
definitive evidence for or against neutralinos and axions should become available.
Existence of one does not preclude existence of the other: The dark matter in the
universe may contain both of these particles, as well as many other,
as yet unforeseen ones.
1Zioutas et al., What Is Dark Matter Made Of?,
Science,
Vol 306, Issue 5701, 1485-1488 , 26 November 2004, [DOI: 10.1126/science.1102823].
Well, thats nice; we dont mind you
looking on someone elses euro, but come back when you have proof.
The null hypothesis is that dark matter does not exist (see 09/03/2003
headline). Wed like to know your
timeline and exit strategy. How long should a con artist be allowed to look
for some claimed miracle substance or magical force that he says explains everything?
(See 02/10/2004 headline.)
Some hunches in science proved very productive and enlightening, but some have been
dead ends, like the search for caloric and phlogiston. Giving a fictitious
particle a name does not validate an endless quest for it (see 06/20/2003
headline). How can it be falsified?
What will you do with your cosmological models if you can no longer
appeal to undetected or undetectable substances? Are you prepared to deal with the universe
as it is? Are you prepared to endure the wrath of Bob Berman? (see
10/06/2004 headline).
Next headline on:
Cosmology
Darwin Wars Stir Up American Schools
11/30/2004
Laura Parker has recounted the ongoing battles over the teaching of evolution in
public schools in the 11/29 issue of
USA
Today. She says 24 states are dealing with how evolution should be taught,
and mentions the battlegrounds in Georgia, Wisconsin, Ohio, Pennsylvania
and the Grand Canyon bookstore. Not one anti-evolutionary scientist is given a
quote, but the article gives prominent press to the usual pro-Darwin celebrities,
Ken Miller and Eugenie Scott, along with ACLU lawyers and school board members who oppose
the new initiatives to teach criticisms of Darwinism or allow alternatives such as
intelligent design. Parker frames the issue as a debate between science and
religion.
Since many more people read USA Today rather
than science journals that falsify neo-Darwinian theory (see yesterdays
headline), lets use this article for a baloney detecting
exercise:
- Scopes Trial: The 1925 monkey trial is mentioned in the opening
paragraph without any hint that the roles have been reversed. In 1925, the
teaching of evolution was banned. Now, not only is creation banned, but
non-religious intelligent design theory is banned, and even pointing out flaws in
Darwinian theory from scientific sources can get a teacher fired. This is the
dictatorship of the opposition with a vengeance, but Parker makes it seem that the
current debate is just a resurgence of backwoods hicks who cant realize they lost.
- Pro-Science: The Darwin Party loyalist on the Kansas school board
who was defeated this month is described as pro-science. (Presumably
that makes the opponent anti-science.) If he were really pro-science, he would
read the journals like we do at Creation-Evolution Headlines and admit that
the Darwin Partys case is a long litany of flipflops, storytelling and
embarrassing admissions.
- Political Science: The debate over evolution itself has
evolved, jokes Parker. She quotes Ms. Sola Darwina, Eugenie Scott, as
describing the new debates as politically smart.
- They have no science: Parker does not contest the view of Scott,
who dismisses the opposition with, They have no science. Big lie,
and shoe on the wrong foot; those four words fit Darwinists like hand and glove.
- Is that a fact? Perform qual (qualitative analysis) on this sentence:
But giving equal time to alternative views, critics such as Scott say, suggests
that they are on par scientifically with evolution, which is grounded in scientific
fact. I.e., a fact is a fact because I say so with feeling.
- Be sensible: dont mislead the kids: A teacher and political activist is
quoted, It doesnt make any sense to give equal time to all these other
ideas that are vastly unsupported. Its misleading to kids.
Thats right, so stop teaching Darwinism as fact. Who is asking for
equal time? Which ideas are vastly unsupported? Let the Darwinist scientists
themselves speak: see headline and follow the chain links on
Darwinism, if you want better support for a position than
spin-doctored sound bites.
- Sneaky Conspirators: Parker says, The most popular alternative
is intelligent design. Proponents of intelligent design do not
publicly identify the intelligent force, although they privately say it is God.
Why not turn the tables on the Darwinists? Isnt it fair to say: Proponents of Darwinism do not
publicly identify their religious beliefs, but privately they say there is no God.
Many intelligent design movement leaders are very clear in their writings and speaking
what their personal beliefs are, but that is beside the point. Their claim is that
design detection is possible without identifying the designer, which is already the
practice in SETI, archaeology, forensic science and cryptography. There are
scientists of various religious persuasions, and no religious persuasion (like Michael
Denton and Paul Davies) who find the arguments for design compelling. Parker ignores
the arguments of ID in favor of portraying them as sneaky tactics of religious zealots.
- Follow the money: Parker mentions the Discovery Institute in Seattle
boasts as its largest donor the Bill & Melinda Gates Foundation.
Then why not mention that Paul Allen, Bill Gates right-hand man, personally funded
the $14 million PBS Evolution series? Why not mention the governmental and
foundation funding that outspends opponents many times over?
- Protestors: The honorable, altruistic Jeff Brown and his wife resigned in protest
over Dover, Pennsylvanias vote to include ID in the curriculum. I
dont think we should be teaching it. It is not a scientific theory, it is only a hypothesis,
he said. Sounds like what William Jennings Bryan said about Darwinism in 1925.
- Sneaky conspirators, reprise: Parker writes, Opponents call
intelligent design creationism in a tuxedo that attempts to
blur the line between religion and science in a way that will survive
an inevitable court challenges. O, those dastardly creationists, with
subterfuge attempting to fling mud on the ivory idol of Charlie under cover of night. They sneak up
in tuxedos instead of barnyard overalls. It seems a little difficult to hide the
intentions of creation/ID proponents that are daily broadcast all over the world wide web.
Notice also how the Darwin Party hopes the courts will come to the rescue.
They dont trust we, the people.
- Rewriting history: In 1987, the article continues,
the Supreme Court found that teaching creationism in public schools violates the constitutionally guaranteed separation of church and state.
No, it did not (here we go again): it forbade states from mandating equal time for creation and
evolution. It specifically stated that any scientific evidence about origins could be taught.
- Cant stamp out this nuisance: Weve been fighting
this since 1925, says Witold Walczak, a Pennsylvania ACLU lawyer.
Why arent people questioning atomic theory? Why arent they
questioning the theory that the Earth revolves around the sun? Thats
because evolution conflicts with their religious beliefs. Need we remind
Mr. Walczak that chemistry and gravity are observable phenomena in the present, but
Darwins common ancestry story involves the unobservable past? Turn the
tables again: lets say, The Darwinists fight the opposition because
creation conflicts with their antireligious beliefs. Hes right
about 1925. The ACLU wanted John Scopes to be free to use the textbook that
taught that Caucasians were the superior race (see 08/04/2004
headline).
- Whole lot of shaking going on: Ken Miller, co-author of the textbook
that Cobb County, Georgia stickered with disclaimers, doesnt like the disclaimer
that encourages students to keep an open mind and use critical analysis, because it
gives the impression that its a very shaky theory. The definition
of a shaky theory is one whose proponents fear open-minded, critical analysis of
the evidence.
Dont just read these arguments. Practice them. Get good at baloney detecting,
and write your newspaper whenever they perpetuate fallacious statements and misconceptions.
They will continue to get away with it until they fear the light from knowledgeable, articulate,
informed readers who understand the issues and cannot endure one-sided propaganda.
Next headline on:
Politics and Ethics
Education
Darwinism and Evolutionary Theory
Intelligent Design
The Darwin Variations: Theatre of the Absurd 11/29/2004
Science journals are usually about labs instead of stage shows, but
Peyret and Prochiantz went to a play in Paris about Darwin and reviewed it in
Nature.1 They called it theatre of the absurd,
but liked it. They describe two scenes:
The curtain rises, for instance, on an empty stage. Two actors appear, wearing dark glasses, carrying a bench, a pebble and an egg. Off stage a blind man on his death-bed debates the existence of God with a priest, based on their different experiences of the natural world. The conversation shifts, and the question becomes whether, given a choice, a blind man who knows the world by touch alone would choose to have eyes or a longer pair of arms. Just then, one of the blind men on stage throws up the egg, and the other catches it in mid-air.
In another scene, a woman sitting on a bench, cutting up newspaper, asks the man beside her if contempt is expressed by a slight pouting and a flaring of the nostrils with a small expiration one of Darwins observations from his book The Expression of the Emotions in Man and Animals. The man doesnt respond. She asks him, indignantly, if the expression for disgust resembles that of someone about to spit. He gazes off into the distance. Enraged, she threatens him with her scissors. His face contorts, he throws himself at her, and the scene ends in a fight to the death.
Sound like something you would go to see? They described the play as funny, original
and anything but didactic, but appreciated it most because it showed
the human side of Darwinism:
Darwins theory of natural selection has been handed down to us as the broad vision of a brilliant man, meticulously researched, comprehensive and self-assured. We hear less about his doubts, his procrastination and anguished discussions with contemporaries. Nor is it well-known that, in confronting the implications of his theory, he made himself ill. Im sick to the stomach, he confesses at times throughout The Darwin Variations.
The play itself evolves, they note. Those attending on the last night may see
something quite different to those present at the opening not necessarily any better or worse, just different.
1Jean-Francois Peyret and Alain Prochiantz, The Darwin Variations,
Nature 432, 445 (25 November 2004); doi:10.1038/432445a.
It wasnt creationism that brought civilization the theatre of the absurd.
Creationists brought the world things like the Hallelujah Chorus and
The Greatest Story Ever Told. If evolution is making you ill, and giving you
an upset stomach, try these guaranteed remedies:
Psalm 119,
and I Peter 1.
To feel even better, follow it up with
Philippians 4.
Next headline on:
Darwinism and Evolutionary Theory
Dumb Ideas
Candidates Vie for Stupid Evolution Quote of the Week 11/29/2004
Contributions for the weekly prize sometimes come in as numerous as contestants at the Boston Marathon.
You can send in your contributions or vote on the following:
- Evolution as sculptor:
Sid Perkins, in Science
News, submitted three entries in an article on penguin evolution:
- Early in penguin evolution, the bones, especially
in the wings and hind limbs, became thick and dense. This change would have
improved the ease with which the birds could dive to chase underwater prey. In
contrast, the bones of flight-capable birds are highly buoyant because evolution has
fine-tuned them to be thin, light, and, in some cases, filled with air.
- Besides acquiring dense bones, penguin ancestors evolved
narrow wings with inflexible elbows that worked as streamlined hydrofoils....
- Evolution Marches On... So, even though penguins have been immensely successful,
the forces of evolution continue to sculpt their genome.
- No speculations here:
Thurston Lacalli, in Nature (Nov 25),
in an article on the evolution of the eye, commenting on a presumed ancestral marine
worm that had two kinds of photoreceptors:
Speculations aside, the new work provides a solid starting
point for further study of the evolution of photoreceptor organs during
the diversification of bilateral multicelled animals. In evolutionary terms,
it is a long way from a simple ocellus [see 08/13/2004
headline], involving no more than a few cells,
to the complexity of an optimally constructed image-forming eye. Evolution
seems to have accomplished this transition piecemeal, by myriad small
steps, each an adaptive improvement over what went before. A detailed
accounting of the steps is as yet beyond us, but clarifying the nature of the
ancestral condition is a useful beginning.
- The persistence of myth: Paul Mellars, in
Nature (25 Nov) in an article on Neanderthal man
(see also 10/01/2004 and
09/21/2004 headlines):
That the Neanderthals were replaced by populations that had evolved biologically,
and no doubt behaviourally, in the very different environments of
southern Africa makes the rapid demise of the Neanderthals even more remarkable, and
forces us to ask what other cultural or cognitive developments may have
made this replacement possible.... Perhaps it was the emergence
of more complex language [see 02/27/2004
headline] and other forms of symbolic communication that gave the
crucial adaptive advantage to fully modern populations and led to their subsequent
dispersal across Asia and Europe and the demise of the European Neanderthals.
The precise mechanisms and timing of this dramatic population dispersal from
southern Africa to the rest of the world remains to be investigated.
- No data? No problem: R. Van Boekel et al., in
Nature (25 Nov), in the abstract to a paper on interplanetary dust:
Our Solar System was formed from a cloud of gas and dust.... Little is known
about the evolution of the dust that forms Earth-like planets.
(Note: All they suggested was that observations from dust disks around other stars shows an
apparent zone of crystallization in the inner regions: Our observations thus imply
that crystallization of almost the entire inner disk and a substantial part of the outer disk
must have occurred very early in the evolution of the disk.
How the crystals afterward survived the melting of terrestrial planets during their
formation and bombardment was not explained.)
- Giving evolution a kickstart: Robert Service, in
Science (26 Nov),
commenting on recent experiments on artificial selection of proteins:
Evolution isnt known for its quick work. In recent years, researchers have come up
with numerous ways to give it a kick in order to evolve [sic; this is intelligent design]
proteins with new functions. But most of these techniques are painfully slow,
taking as long as a month to go through a single round of evolution. The immune cells of
vertebrates long ago perfected a faster approach, which they use to generate the myriad antibody
proteins that fight off infections. Now a team of California researchers has coaxed immune cells
to apply their skill to other proteins, an ability that could speed the development of
novel proteins for studies from catalysis to cell biology.
- Comfort is the mother of evolution: Erik Stokstad, in a story on horse evolution in
Science (26 Nov):
High-crowned teeth took a while to evolve to resist gritty food.
Later, During the Miocene, horses and camels were evolving
longer limbs, but apparently not to escape accelerating predators--which evolved longer
limbs some 20 million years later. Instead, [Christine] Janis
(Brown U.) proposed, the limbs first evolved to be more efficient at walking....
High-crowned teeth might not be the only way to make life on the grasslands less of a grind.
Decisions, decisions. Its like having 800
cable channels and nothing worth watching except the old comedies.
Next headline on:
Darwinism and Evolutionary Theory
Dumb Ideas
Neo-Darwinism Falsified in the Lab, Again 11/29/2004
Last month (see 10/19/2004
headline), we reported a paper from PNAS that showed, contrary to evolutionary
expectations, that mutations, even beneficial ones, conspire to decrease fitness.
Now, another independent study has corroborated the first claim.
Bonhoeffer et al. in
Science (26 Nov)
sought to understand the evolution of sexual reproduction because it remains a mystery:
Reproductive strategies such as sexual reproduction and recombination that involve
the shuffling of parental genomes for the production of offspring are ubiquitous in nature.
However, their evolutionary benefit remains unclear. Many theories have
identified potential benefits, but progress is hampered by the scarcity of relevant data.
The editor even mentioned it thus: Note added in proof:
After this paper had been accepted, a related paper on epistasis in the vesicular stomatitis
virus by Sanjuán et al. appeared. They got similar results investigating
recombination in HIV. They could only speculate on why recombination evolved in HIV
when it seems to decrease the ability to evolve drug resistance.
Commenting on these
studies in the same issue of Science,2
Yannis Michalakis and Denis Roze said, The Sanjuán et al. and Bonhoeffer et al. studies
show that the pattern of epistasis in RNA viruses is not compatible with current
genetic theories of sexual reproduction and recombination, which assume that mutations
affecting fitness exhibit negative epistasis (i.e., that they do not work against each other).
Since epistasis means one gene fighting another gene, evolutionists dont want
positive epistasis. They want to see negative epistasis, such that beneficial mutations
do not counteract each other, and deleterious mutations do not conspire to cause more damage.
Now, however, two independent studies found only the positive, anti-fitness kind of interaction.
1Bonhoeffer et al.,
Science,
Vol 306, Issue 5701, 1547-1550, 26 November 2004, [DOI: 10.1126/science.1101786].
2Michalakis and Rose, Epistasis in RNA Viruses,
Science,
Vol 306, Issue 5701, 1492-1493 , 26 November 2004, [DOI: 10.1126/science.1106677].
OK, Darwin Party; the burden of proof is on you.
Lets see you squirm your way out of this one without concocting a myth to
explain it away.
Another quotable quote in the Bonhoeffer paper was their demolition of
evolutionary stories about the evolution of sex:
One of the most fundamental questions in biology is why sexual reproduction and recombination are so widespread. Meiotic recombination and sexual reproduction both induce the shuffling of parental genomes for the production of offspring. Intuitively, shuffling might appear to be beneficial, because it promotes genetic diversity among the offspring and thus allows for a faster rate of adaptation. However, this explanation has several shortcomings. First, sexual reproduction and recombination do not always increase genetic variation. Second, even when they do, it is not clear why greater genetic variation should generally be adaptive. Third, recombination may not only create but also destroy favorable combinations of mutations. Therefore, what is the evolutionary benefit of shuffling two genotypes that are proven viable in their current environment?
They studied recombination, looking for a benefit. They found none, but provided
good grist for the anti-Darwinism quote mill.
Next headline on:
Darwinism and Evolutionary Theory
News Nuggets 11/29/2004
- Another Adult Stem Cell Success: EurekAlert
reports that adult stem cells have been shown to cure incontinence.
Stem cells are first extracted from the patients arm, and cultured for six weeks.
Then, they are injected into the urinary tissue in a 20-minute outpatient procedure that
makes them grow into the surrounding cell type, stopping leakage within 24 hours.
18 of 20 patients remained continent a year later.
- Homing Pigeon Secret: A new study summarized by
EurekAlert
and National
Geographic News found that homing pigeons store a magnetic map in their beaks.
Researchers from University of North Carolina at Chapel Hill, led by Cordula V. Mora,
could affect the pigeons homing ability with external fields and with beak-mounted
magnets.
- Spiders Weave Material of the Future:
EurekAlert
reports that spider silk could become the intelligent materials of the future
if engineers can figure out how to mass produce it. The distinctive toughness
of spider silk could allow manufacturers to improve wound-closure systems and plasters,
and to produce artificial ligaments and tendons for durable surgical implants.
The silk could also be woven into strong textiles to make parachutes, body armour, ropes
and fishing nets. A whole range of ecological materials could emerge from the
industrial production of spider silk, it promises, without harming the environment.
- Galileo Gets Website: Science pointed out last week that the
Galileo Project website at Rice University is
growing, with many historical documents now freely available online: for instance,
all 124 letters from his daughter Maria
Celeste have been published. (See Galileo in
our online book.)
- Molecular Rotary Motor Designed: A team from University of Edinburgh,
reporting in
Science (26 Nov),
succeeded in coaxing a ring-like molecular structure to undergo reversible rotary motion.
Using Brownian (random thermal) motion to advantage to create such a motor requires, they say,
(i) a randomizing element, (ii) an energy input to avoid falling foul of the
Second Law of Thermodynamics, and (iii) asymmetry in the energy or information
potential in the dimension in which the motion occurs. They mentioned ATP
synthase (see 02/13/2004 headline) but did not claim
their invention was anywhere near as complex, or suggest how such a motor evolved.
Instead, their experiments were meant to illustrate how interplay between informational
and thermodynamic laws governs directional Brownian rotation in molecular structures.
- Hobbit Fossil Goes to Skeptic:
Science
was somewhat alarmed that possession of the bones of Homo florensiensis (see
10/27/2004 headline) are going to Dr. Teuku Jacob, a skeptic of the idea
that these were evolutionary links. He believes instead they were modern human specimens
suffering from microcephaly. Whether he will returns the bones after a year, or ever,
is a fear making other paleoanthropologists very unhappy.
- Tetrapod Transitional Form: Erik Stokstad attended the annual meeting
of the Society of Vertebrate Paleontology earlier this month, and dropped a hint in
Science (26 Nov)
that a team of American paleontologists found lobe-finned fish fossil in Canada that may be
an Archaeopteryx-quality transitional fossil between fish and
tetrapods. Since Archaeopteryx was a flying, feathered, perching bird,
one can only surmise what this means.
- Survival of the Unfit:
National
Geographic News summarized a report from Nature that
shows natural selection does not always clearly favor the swift and the strong. Studies
of lizards under selection pressure did not always produce a clear result. Other factors,
such as the environment and behavior, can complicate the selection process and produce a variety
of effects. One evolutionist smirked about the naive concepts people have. The
weak and slow often thrive, even though the theory of natural selection suggests that
weak runners ought to be weeded out from the gene pool. That led NG to
begin its report, Glance at a crowd at just about any big sporting event and youll
notice that humans are a diverse bunch. Not only the fittest have survived.
One of Murphys spinoff laws stated: The intelligence of the human race is a
constant. The population is increasing. One might make similar comparisons
about the plausibility of Darwinism as evidence increases.
Next headline on:
Health
Birds
Early Man
Fossils
Darwinism
Intelligent Design
Non-Coding DNA Extremely Conserved, Essential for Regulation 11/26/2004
A paper in PLOS Biology1 compared non-coding DNA from widely-separated
vertebrates and found them not only extremely conserved in many cases, but
essential for regulating the gene-coding regions.
Understanding the intricate and finely tuned process of gene regulation in vertebrate development remains a major challenge facing post-genomic research. In order to begin to understand how genomic information can coordinate regulatory processes, we have adopted an approach integrating comparative genomics and a medium-throughput functional assay. Nearly 1,400 non-coding DNA sequence elements were identified that exhibit extreme conservation throughout the vertebrate lineage....
Most, if not all, of the CNE [conserved noncoding element] sequences appear to be associated with genes involved in the control of development, many of them transcription factors. A significant proportion of genes identified in this study are homologous to those identified in the sea urchin and other invertebrates as master regulators of early development, leading us to believe that they interact in GRNs [gene regulatory networks]. Consequently, it is extremely likely that the CNEs identified compose at least part of the genomic component of GRNs in vertebrates, acting as critical regions of regulatory control for their associated genes. Such regions would mediate up- or down-regulation of expression, effecting a cascade of downstream events.
They speculate that these sequences are not mere binding sites, because that would not explain
the high degree of sequence conservation. Consequently, they say, we have not
ruled out the possibility that the CNEs may have a completely different mode of action or act
in numerous different ways. The team of 16 scientists from the UK were struck with the similarity of these noncoding
sequences between human, rat, mouse and pufferfish. They performed some limited functional
analysis on the sequences and found that some affect genes that are physically distant, often
megabases away. Though apparently essential, They are amongst the most highly conserved
of all sequences in vertebrate genomes yet they are completely unrecognisable in invertebrates.
It seems, however, that invertebrates have analogous sequences for gene regulation, as stated
in their introduction:
Identification and characterisation of cis-regulatory regions [i.e., on the same strand of
DNA] within the non-coding DNA of vertebrate genomes remain a challenge for the
post-genomic era. The idea that animal development is controlled by
cis-regulatory DNA elements (such as enhancers and silencers) is
well established and has been elegantly described in invertebrates such as Drosophila
and the sea urchin. These elements are thought to comprise clustered target sites
for large numbers of transcription factors and collectively form the genomic
instructions for developmental gene regulatory networks (GRNs). However,
relatively little is known about GRNs in vertebrates.
More work will need to be done to find out if this is true for vertebrates, as it appears
from this study, and if so, how these vertebrate CNEs work. Some could prevent gene
expression, for example, as well as enhance it. Whatever their mode of action,
the striking degree of conservation displayed by this set of CNEs suggests they play
critically important functional roles, they deduce. In conclusion, they state,
Given their strong association with genes involved in developmental regulation, they are
most likely to contain the essential heritable information for the coordination of
vertebrate development.
1Woolfe et al., Highly Conserved Non-Coding Sequences Are Associated with Vertebrate Development,
PLOS
Biology, Vol 3 Issue 1 (Jan 2005), published online 11/15/2004: DOI: 10.1371/journal.pbio.0030007.
The authors make only the meagerest references to evolution,
none of it helpful to the Darwin Party. They merely state as matters of belief the
evolutionary divergence between humans and mice, and make other similar
assumptions that said divergent animals evolved from a common ancestor. They merely
assume some genes evolve quickly and others slowly. But when it comes to
explaining how such extremely conserved sequences could survive the inexorable pressure
of natural selection for oodles of aeons, they admit there is nothing but guesswork:
A number of other ideas on the evolutionary mechanisms responsible for
ultra-conservation have been suggested, involving decreased
mutation rate, increased DNA repair, and multiply-overlapping transcription factor
binding sites, but without more functional studies such hypotheses remain speculative.
Elsewhere, they remark with astonishment about specific examples of CNEs in all four species
(human, rat, mouse, pufferfish) that show 100% identity, demonstrating an
extraordinary level of conservation for genomes separated by 900 million
years of divergent evolution. Maybe no divergent
evolution. Maybe no 900 million years.
So, any biologists around still wanting to assume this non-coding material
is junk DNA? Stop wasting your life work, your lab equipment, and your
grant money. Get with the program the ID program. Get out there
and find out what it was made for.
Next headline on:
Genetics and DNA
Intelligent Design
Evolution Made Us Liars
11/23/2004
Julian Keenan (Montclair State University) is teaching that evolution made us
liars, reports the
Atlanta
Journal and Constitution. He teaches,
Lying has played a key role in our evolution, in making humans, human,
he said. Its one of the most amazing, sophisticated, advanced
cognitive abilities we have. All evidence indicates that we are genetically
programmed to lie. The liar has such an advantage over you. So the gene is passed on.
See also the 04/26/2004 headline.
Hes lying. It was all a ruse to win
Stupid Evolution Quote of the Week. Did you catch his encore? He said
lying evolved, but then said, Morally, lying is wrong. Good one!
Next headline on:
Darwinism
Dumb Ideas
Not Even Liberals Want Evolution Only
11/23/2004
A CBS
News Poll shows that 56% of Kerry supporters believe both creation and evolution
should be taught in public school science classes, compared to 71% for Bush supporters.
In all categories, Bush supporters favored less teaching of evolution and were more likely
to believe God created humans in their present form (67% vs. 47%), but only a small minority from
either party believe evolution did it all (6% Bush supporters, 21% Kerry
supporters).
In a related story,
CBS
News also discussed the Evolution Showdown in Georgia. It
says Atlanta residents are flocking to Cobb County for its schools, which have the
highest SAT scores in the state and also evolution disclaimers in the textbooks
(see 11/08/2004 headline).
Support survival of the fittest. Support
the removal of parasitic Darwin Party welfare programs (see
12/22/2003 commentary). Now that
Darwinism has been falsified (see 10/19/2004 headline),
and even its high priest doesnt want it acting on him
(see 11/14/2004 headline), its time to
clean house: clean the science class of musty, dusty, outmoded, obsolete speculations
by 18th century radical liberals. Move it to the History class.
Next headline on:
Politics and Ethics
Education
Darwinism and Evolutionary Theory
Only 27% of Dinosaur Types May Be Known 11/22/2004
The surge in dinosaur discoveries over the last decade is leading some paleontologists
to estimate that 73% of the dinosaur genera may be unknown to science, according to a
story in Science News.1 There were 285 genera known in 1990,
but since then, 222 more have been added. New findings have been especially
impressive in China and Argentina.
Fossil hunters on the Isle of Wight, meanwhile, have found Britains
biggest dinosaur so far, reports the
BBC News. The vertebra
from the sauropod leads to estimates it was 20m in length. Team leader Darren Naish
commented about this and even larger specimens recently found in Spain and Portugal: But
given that until recently people didnt think there were any big sauropods in the
Lower Cretaceous, I think this is part of a bigger story. (See
07/20/2004 story of a find in Spain.)
1Sid Perkins, Plenty of dinosaurs yet to be found,
Science News,
Week of Nov. 20, 2004; Vol. 166, No. 21 , p. 334.
Since there are plenty to go around, lets
see more home school dino digs (see 07/23/2003 and
05/21/2002 headlines). Everything seems to have
been bigger in the past. Cave bears used to be triple the size of grizzlies,
and saber tooth tigers were bigger than our modern lions. We live in a
species-impoverished world compared to the fossil record. Does that sound
like evolution?
Next headline on:
Dinosaurs
Fossils
Intelligent Design Science: Does a scientist have to
assume naturalism to do research? Jonathan Wells assumed intelligent design
when studying centrioles, a little-understood part of centrosomes (involved in
cell division), and found they act like miniature turbines. His work may lead
to new insights into chromosomal instability, a major cause of cancer.
Read about it on
PCID
Vol 3.1 (Nov. 2004).
Next headline on:
Intelligent Design
Islamic Science Is Backward 11/21/2004
Two Pakistani scientists asked for enlightened moderation among fellow
Muslims in the Nov. 18 issue of Nature.1 Admitting to the backwardness
of Islamic science and technology, they called on the 57 predominantly-Muslim nations
of the Organization of the Islamic Conference (OIC) to reaffirm their commitment to
science:
The global security situation has given Islam a false image, that of a religion of intolerance,
activism and terrorism. Islam is unfairly linked with fundamentalism, fundamentalism with
extremism, and extremism with terrorism.
Muslims can argue all they like that this loose thinking is unfounded,
but we are having little impact in todays battle of ideas. It doesnt
help that some Muslim nations are probably among the poorest, the least educated and
the least powerful on the planet. We must get out of this rut if we do
not want to be marginalized and to condemn future generations.
They say the time has come for critical thinking and soul-searching among Muslims,
and believe that a recommitment to science and technology will bring a
knowledge-based renaissance.
Science and Islam share a glorious past. In its heyday, Islam was the
standard bearer of a society of law and order, justice, tolerance and exemplary values.
The Koran encourages the pursuit of science, and the Islamic world was a
cradle of science from the eighth to the fifteenth centuries.
But the Muslim world has strayed far from these values, the authors claim.
We have fallen behind in socio-economic development and in the generation of ideas.
During our decline, we have shut ourselves off and refused to absorb knowledge from others.
And our spending on science is dire. We can regret this deplorable situation, but we
also need to face up to it.
Although they believe the West can help, they mostly call on Muslims to examine tough
questions, like what are our ideas? Where are we going? Clearly,
they believe, confrontation and political activism will not bring us back to our
glorious past.
We must take an enlightened path dedicated to developing our human resources,
and tackling the problems of poverty, education, health and social justice. We must
abandon confrontation in favour of moderation, conciliation and
individual freedom. It is time for renaissance of the Ummah (the global
Muslim community). This is how we will eliminate the perception of Islam in
conflict with modernity and democracy.
When it comes to quality of Islamic science, papers published, prizes won, and spending
on science education by the OIC, the situation, they put it bluntly, is dismal.
Turkey, Iran, Egypt and Pakistan have shown the most progress in recent years.
In Pakistan, science has been encouraged by pecuniary motivation, by a system that provides
an opportunity to more than quadruple their earnings if they increase the numbers
of their papers published in peer-reviewed journals. (Instead of publish
or perish, this might be called publish and flourish.)
They point out the basic oxymoron of the Muslim nations, that while they
contain most of the worlds oil riches, they rank near lowest in socio-economic development.
This is partly due to centuries of neglect by our political leaders in scientific and
technological education. They point to some promising signs, but so far, it
is only a dream for a happier and more prosperous future. They
ask for the cooperation and interaction of the scientific community, so that
In the place of the clash of civilizations, our collective wisdom and efforts
can help heal wounds and guarantee a safer and better world for those who will follow us.
1Atta-Ur Rahman and Anwar Nasim, Time for Enlightened Moderation,
Nature 432, 273 - 274 (18 November 2004); doi:10.1038/432273a.
Good questions, and noble dreams, but why not
condemn the terrorists? Notice how Rahman and Nasim did not repudiate the acts of
terror that have given Westerners an image of AK47-toting Muslim men jumping up
and down over burning American flags, Muslims beheading prisoners and treating their women
as half-human. A little moderation is certainly in order. To what extent
is the religion of Islam responsible for these damnable actions by its most ardent
followers, the ones who are most dedicated to following Mohammeds teachings to
the letter? To what extent is the religion of Islam responsible for the poverty
and backwardness of most of its people, such that six of the eight poorest countries
in the world belong to the OIC?
Visitors to Muslim countries are quick to affirm that most of their
citizens are ordinary people just like those in any other country, with hopes and dreams
for their families, a desire for peace and an exemplary level of hospitality.
The fault lies primarily in the Islamic leadership and media that continue to
foment hatred and fear. But one must also seriously ask whether the teachings
of Mohammed himself are to blame, a man whose sexual and terrorist exploits are
legendary, a man who, unlike Jesus Christ, was petty, vindictive, capricious, violent,
murderous, illogical, superstitious, contradictory, delusional, a plagiarist and basically
anti-scientific. Would his disciples be expected to rise to higher levels
of virtue and intellect than the revered master? We must be skeptical of the
claim that the Koran encourages the pursuit of science, as claimed here and by other Muslim
apologists. (Notice they gave no references).
Medieval Muslims did bequeath to the world the zero and algebra, the names of stars and some
medical advances, geometric art and many cultural achievements, but science as an
enterprise for its own sake never really took off in Arab countries.
Much of what was achieved was based on Aristotle rather than the Koran.
Some Muslim scholars have noted that the lack of a true, maintainable science is
due to the nature of their God Allah, who is viewed as so utterly sovereign that
he acts capriciously and unpredictably. The Judeo-Christian God, by contrast,
is sovereign but never acts contrary to his own nature of righteousness and justice.
As a lawgiver, his work can be studied and trusted. To a Christian, when an arrow
is shot, it follows the laws of physics; to a Muslim, Allah himself must push the
arrow at every instant. Therefore a Muslim can never be sure that the arrow
will fly the same way every time.
The contrast between Islamic and European science is a complex
subject well worthy of study. Islamic apologists today try to defend science
in the Koran in a manner somewhat analogous to Christians who do so with the Bible.
(They omit the parts of the Hadith that say Adam was 90 feet tall, that yawning
is from Satan, that an entire village turned into apes and that Jews were turned
into pigs, or that seven men and their animals slept for 309 years in a cave and
got up just fine. Islamic physicians dont repeat for Westerners what
Mohammed taught, that if a fly falls into your cup its OK because one
wing has the disease but the other has the antidote; see
Islamic Invasion by
Dr. Robert Morey for the Hadith references for all these claims.)
Early Muslims also subscribed to circular rather than linear time, which hindered
their conception of cause and effect and produced many weird anachronisms in the
Koran and Hadith. Their philosophy did not produce the intelligent design movement,
but now some are trying to co-opt it for its apologetic (jihad?) value (see
IslamOnline.net
article by Mustafa Akyol).
Good luck, Rahman and Nasim. It seems to us to get more moderation
and enlightenment in OIC nations, they will have to ignore the Koran and
start reading Western books, including the Bible. And science itself will not
produce a virtuous people. A thief with mathematics will become a worse thief,
and a murderer with physics can become a mass murderer. Science will not bring a
happy and prosperous future to the OIC if Muslim scientists use their learning to build better
WMDs. And Westerners, fear greatly a scientifically-literate religion
that believes in conquering by the sword, as its founding prophet commanded (see
Morey, pp. 197-200).
Postscript: Notice how Nature gave lengthy, positive press to the religion of
peace in their science journal. How many want to hold their breath for a similar
article on Christian or Jewish science? You wouldnt think that Big Science
is also enslaved to political correctness now, would you?
Next headline on:
Politics and Ethics
Another Homochirality Theory: Will It Work?
11/19/2004
The emergence of homochirality is a crucial enigma in the origin of life,
begins a paper in PNAS, as do most papers on this subject (see
06/21/2004 headline and
online book). French researchers Plasson et
al. seem pretty cocky this time:
We show that the use of a Frank-like model2 in a
recycled system composed of reversible chemical reactions, rather
than the classical irreversible system, allows for the emergence of
a synergetic autoinduction from simple reactions, without any
autocatalytic or even catalytic reaction. This model is described as
a theoretical framework, based on the stereoselective reactivity of
preexisting chiral monomeric building blocks (polymerization,
epimerization, and depolymerization) maintained out of equilibrium
by a continuous energy income, via an activation reaction. It
permits the self-conversion of all monomeric subunits into a single
chiral configuration. Real prebiotic systems of amino acid derivatives
can be described on this basis. They are shown to be able to
spontaneously reach a stable nonracemic state in a few centuries.
In such systems, the presence of epimerization3 reactions is no more
destructive, but in contrast is the central driving force of the
unstabilization of the racemic state.
Well, this must be good, then. They describe theoretically a dynamic system
of amino acids joining and disjoining with a free flow of energy and ingredients.
An examination of their paper shows that
their best-case scenario, provided all the ingredients are present in the right
conditions, might produce about 70% of one hand in a few centuries (a value that
stabilizes and does not rise higher). But
even this does form polypeptide chains only an excess of one-hand in the
amino acids. They admit, However, the formation of the first prebiotic
peptides is not a trivial problem, as free amino acids are poorly
reactive (in fact, peptide bonds tend not to form in water). To solve this
part of the problem, they imagine alternate wetting and drying periods and the presence
of N-carboxyanhydrides to activate the amino acids.
Their tests required fairly high concentrations of ingredients, and
specific temperature and acidity. They didnt get any single-handed
chains to result, but feel they are getting warmer:
Of course, the APED system [their model] does not yet constitute a
metabolic pattern, but has some of its characteristics. It does not
take into account the matter of creation (i.e., the formation of
amino acids in the described example), but it describes the use
of external energy to reproduce some properties (here, the
absolute configuration of the monomers) and to increase the
complexity of matter (by way of polymerization). An interesting
extension to a more complex system is being investigated by
others, focusing on molecular energetic use, via carboxylicphosphoric
mixed anhydrides.
They feel their model is better than the usual direct autocatalytic reaction models,
which they view as dubious in a prebiotic environment.
1Plasson et al., Recycling Frank: Spontaneous emergence
of homochirality in noncatalytic systems,
Proceedings of
the National Academy of Sciences USA, 10.1073/pnas.0405293101, published
online 11/17/2004.
2After F.C. Frank (1953), who considered chirally selective autocatalytic reactions.
3Epimerization refers to the randomizing of handedness when a molecule has
two centers of handedness.
Sorry, close only counts in horseshoes.
The requirement is 100% purity (see 11/05/2004
headline, pt. 6). 30% poison is not better than 50% poison. Too
many ad hoc conditions. No way to get them to join into useful polypeptides.
Too much bluffing. Next.
Next headline on:
Origin of Life
How Science Reporters Lie to the Public
11/19/2004
An ape fossil was found in Spain, and reported in Science.1
It was pure ape, with a mosaic of features that confused the discoverers somewhat;
rather than clarifying the origin of the great apes, it seemed to have some features
that they feel suggested convergent evolution or homoplasy. They
named it Pierolapithecus, and made only a tentative suggestion about its
place in the supposed monkey-ape-human family tree:
Pierolapithecus, hence, does not fit the theoretical model that predicts
that all characters shared by extant great apes were present in their last common ancestor,
but instead points to a large amount of homoplasy in ape evolution. The
overall pattern suggests that Pierolapithecus is probably close
to the last common ancestor of great apes and humans.
In the same issue,2 Elizabeth Culotta described the different opinions
about this fossil and where it fits between monkeys and apes, and between African
apes and orang-utans. Only the mildest suggestions were made that it might
have been on the line that eventually led to humans, but there was confusion
even on the issue of where it fit on the ape family tree. In short, it was
completely ape, and there was no agreement among specialists where to put it into
the lineage of apes and monkeys.
Since the skeletal fragments had a mosaic of ape
and monkey features, there was no clear message of evolution.
The discoverers were reluctant to call it a missing link of any sort.
Heres how the media headlines came out, however:
- National
Geographic: Ancient Ape Discovered: Last Ape-Human Ancestor?
- BBC News:
Scientists have unearthed remains of a primate that could have been ancestral
not only to humans but to all great apes, including chimps and gorillas.
The partial skeleton of this 13-million-year-old missing link was found by palaeontologists working at a dig site near Barcelona in Spain. Details of the sensational
discovery appear in Science magazine.
- MSNBC News: Ape
fossil bridges evolutionary gap and Specimen could represent
the last common ancestor of humans and great apes.
- ABC News:
Ancient Animal Could Be Human-Ape Ancestor: Scientists Say Fossil
in Spain Shows Animal That Is Common Ancestor to Humans, Great Apes.
Some of the news media buried caveats into the text of the articles. But then,
how many people read just the headlines?
1Moya-Sola et al., Pierolapithecus catalaunicus, a New Middle
Miocene Great Ape from Spain,
Science,,
Vol 306, Issue 5700, 1339-1344 , 19 November 2004, [DOI: 10.1126/science.1103094].
2Elizabeth Culotta, Spanish Fossil Sheds New Light on the Oldest Great Apes,
Science,
Science, Vol 306, Issue 5700, 1273-1274 , 19 November 2004, [DOI: 10.1126/science.306.5700.1273a].
This animal was pure ape. It would have walked
like an ape, climbed like an ape, smelled like an ape, and aped like an ape.
If you found one you would put it in the zoo in the ape cage. It was no more
evolving into a human than a new kind of horse fossil was evolving into a giraffe. Instead of helping
clarify evolution, it confused it, because it had a mosaic of features that did not
fit neatly into any evolutionary lineage. The researchers had to employ the
hocus-pocus phrase convergent evolution to explain it.
Compared with other apes, there was not a
single incipient human feature about it, but all the news media hyped the faintest suggestion
by some of the researchers that it might have had something to do with the
last common ancestor (assuming evolution) between apes and humans.
Shouldnt this make a sensible person angry? Suppose any other special
interest group or religion routinely got such favorable press for
non-sequiturs like this. Yet as predictably as
monkey see, monkey do, the instant any fossil of an ape, monkey or alleged hominid
is reported by any scientist, you can bet your bananas there will be a color picture
of an artists reconstruction of it on National Geographic News the same day,
complete with a big fib about how this is helping us understand our own evolution.
But will they give fanfare to the headline that neo-Darwinism has been falsified in
the lab? (see 10/19/2004 headline). Never.
Bad press for Charlie makes them fold up like monkeys and say, Hear no
righteousness, see no righteousness, speak no righteousness. (Now read the
next headline.)
Next headline on:
Early Man
Darwinism
The Evolution of Marathon Man
11/18/2004
Humans are surprisingly good endurance runners. Did you know that in the
entire animal kingdom, there are few mammals that can keep up a steady run for
10 km or more? (A marathon is 42.2 km).
Many animals are better sprinters than man for short distances, like
cheetahs, but only a few mammals and humans are capable of extended travel in a
trotting gait, and considering that humans only have two feet, they compete
surprisingly well, pound for pound. Surprisingly, no other primate is capable of endurance
running. This distinctive ability of humans made the cover story of Nature
this week1.
Biologists Dennis M. Bramble (U. of Utah) and anthropologist Daniel
E. Lieberman (Harvard) examined the
physiological adaptations for endurance running (ER), and speculated about how this
capability may have evolved in early man. ER is unique to humans among primates,
they state, and uncommon among quadrupedal mammals other than social carnivores (such as dogs and hyenas) and migratory ungulates (such as wildebeest and horses). They elaborate:
Although extensive data on endurance capabilities are not available for most quadrupedal mammals, several lines of evidence indicate that humans, using criteria such as speed and sustainable distance, are much better endurance runners than has generally been appreciated. Human ER speeds range from approximately 2.3 to as much as 6.5 m s-1 in elite athletes. Average ER speeds for recreational joggers range between 3.2-4.2 m s-1 (ref. 21). From an evolutionary perspective, it is important to note that human ER speeds are exceptional compared to non-human primates. Apes such as chimpanzees, and other primates, such as patas monkeys, can sprint rapidly, but they do so rarely and only for short distances. No primates other than humans are capable of ER.
The goal of their paper is to understand the physical requirements for endurance running, and
determine how humans evolved the ability to run. One thing stands out in their paper: the physiological story is much more firmly understood than the evolutionary story.
(National
Geographic News also reported on this story, emphasizing the evolutionary part, and
so did the BBC. It was
also discussed the next day by Carl Zimmer in Science2.)
That humans can run so well is surprising, considering our upright posture:
Moreover, running is more costly for humans than for most mammals, demanding roughly twice as much metabolic energy per distance travelled than is typical for a mammal of equal body mass. Finally, human runners are less manoeuvrable and lack many structural modifications characteristic of most quadrupedal cursors [walkers/runners] such as elongate digitigrade feet and short proximal limb segments.
Bramble and Liebermans extensive paper compares human and
animal running, then analyzes the structural and energetic requirements for ER,
including skeletal, muscular, balancing, thermoregulatory, and respiratory adaptations in
humans. Running is very different from walking, they point out:
Running exposes the skeletal system to much higher stresses than walking, especially when the foot collides with the ground, producing a shock wave that passes up the body from the heel through the spine to the head. Peak vertical ground reaction forces (GRFs) at heel strike are approximately twice as high during running than during walking and may approach 3–4 times body weight at higher ER speeds. Human runners reduce these stresses to some extent through limb compliance and mid-foot striking (thereby also storing elastic strain energy in the leg and foot), but must otherwise dissipate impact forces within their bones and joints.
It takes special physiological adaptations to endure these impact forces.
Did you know your legs act like springs when running? The springs include
the Achilles tendon, and other tendons, the arch of the foot, and muscles and joints, that in combination
save about 50% of the metabolic cost of running. Consider just the arch of the foot:
during running, the elastic structures of the plantar arch function as a spring,
returning approximately 17% of the energy generated during each stance phase.
The authors list some
of the specializations that allow us to break into a run:
Such specialized structures include: an extensive system of springs in the leg and foot that effectively store and release significant elastic energy during running; hypertrophied gluteus maximus and spinal extensor muscles that contract strongly to stabilize the trunk in running but not walking; and an elongate, narrow waist in combination with a low, wide, decoupled shoulder girdle that have an essential stabilizing function only in running.
And thats only part of it. Several other physiological adaptations come
into play during that marathon:
- Stride length: Humans uniquely increase their stride when running,
due to their relatively long legs: Unlike most quadrupeds, humans increase speed during ER mostly by increasing stride length rather than rate.... Stride lengths in humans during ER are typically more than 2 m, and can exceed 3.5 m in elite runners, approximately a metre longer than the strides predicted for a 65-kg quadruped or measured in chimpanzees at the same speeds, even when galloping.
- Stride rate: Humans also have relatively low stride rates at ER speeds, even lower than are predicted for a 500-kg quadruped.... Low stride rates that increase little in the ER range reduce the force required to oscillate the heavy legs (30% of body mass in humans, compared to 18% in chimpanzees) and may favour greater reliance on more slowly contracting, oxidative and fatigue-resistant muscle fibres, which are relatively more abundant in the legs of competitive distance runners than in sprinters.
- Small feet: Reductions in distal limb mass have little effect on the energetics of walking but produce substantial metabolic savings during ER, roughly proportional to the square of the distance of the mass from the hip.... Although we do not know the relative mass of the distal [leg] limb in fossil hominids, humans differ from australopithecines, and resemble many specialized cursors [animals that walk] in having more compact feet and relatively short toes; the human foot is only 9% of total leg mass, compared to 14% in chimpanzees.
- Joint size: Many studies have found that compared to both Pan [chimpanzee] and Australopithecus, Homo has substantially larger articular surface areas relative to body mass in most joints of the lower body, including the femoral head and knee, the sacroiliac joint, and the lumbar centra. The larger joints help dissipate impact energy while running.
- Vertebral adaptations: The authors describe how the pelvis, spinal column
and neck vertebrae in humans help minimize the angular momentum in the trunk caused by rapid oscillation of long, heavy legs, and also how they keep us from pitching forward during the inherently unsteady bipedal gait.
- Muscle adaptations: It may be the butt of jokes, but the gluteus maximus, whose increased size is among the most distinctive of all human features, is strongly recruited in running at all speeds but not in walking on level surfaces. Dont laugh; everything has a purpose (it
also provides a soft cushion when sitting, thanks also to our lack of a tail).
Chimps, by contrast, have no buns, Bramble told National Geographic.
- Counter-rotational adaptations: Humans swing their arms and torso during running while keeping
the head straight. When the foot is on the ground, it can help counteract the rotational torque on the trunk. However, during the aerial phase of running, leg acceleration generates even larger torques that cannot be counteracted by ground forces. These potentially destabilizing forces are offset by the opposing torques produced by counter-rotation of thorax and arms (but not the head). They mention three specific human adaptations that keep us running in a straight line:
a long, narrow waist; greater structural independence of the pectoral girdle and head; and wider shoulders that permit less massive forearms. Reductions in the forearm of Homo (50% less massive relative to total body mass in humans than chimpanzees), substantially lower the muscular effort required to maintain the stereotypically flexed elbow during ER.
- Head adaptations: Our tall, bipedal posture puts us more at risk of pitching forward than quadrupeds or knuckle-walkers. Fortunately, compared to other primates, we have reduced facial projections, larger semicircular canals
(increasing our sensitivity to imbalance), and and a nuchal ligament that runs from the base of
the skull to the base of the neck a convergent feature in Homo... and other mammals that are either cursorial (for example, dogs, horses, hares) or have massive heads (elephants). Interestingly, a nuchal ligament is absent in chimpanzees, and apparently in australopithecines (as evinced by the absence of a median nuchal line). This ligament may keep the runners head from
bobbing violently like those bobble-head toys.
- Heat dissipation: Since running generates so much endogenous heat that sustained running is considerably more limited by thermoregulatory capabilities than is walking, humans have several derived [i.e., absent in ancestors] features for dissipating heat: hairlessness, elaboration and
multiplication of sweat glands, a narrow, elongated body form, more cranial veins, a cavernous sinus,
hot arterial blood in the internal carotid artery before it reaches the brain, a tendency for mouth breathing (but not panting) during strenuous activity. They note that
while nasal breathing is typical of apes, Human distance runners are thus obligate mouth breathers, permitting higher airflow rates with less resistance and muscular effort; mouth breathing is also a more effective means of unloading excess heat during expiration.
Now that all these adaptations have been recognized as essential for endurance running, how did they evolve?
Researchers into human evolution have tended to focus on the adaptations for upright bipedal walking;
running is generally considered to have played no major role in human evolution because humans, like apes, are poor sprinters compared to most quadrupeds. The authors disagree.
Given human ER performance capabilities, as well as the many derived features that appear to make them possible, it is also necessary to ask whether, when and why long-distance running may have played a role in human evolution. Here, the picture is not so clear.
The fossil evidence is too fragmentary to be sure, but they believe these adaptations appeared in the genus Homo, not in assumed precursors like Australopithecus. Most evolutionists have considered the ability to run as a byproduct of the evolution of walking. Again, the authors disagree:
The ER capabilities of Homo raise several additional questions, the first being whether long-distance running was an important behaviour in human evolution or merely the by-product of enhanced walking capabilities. Traditional arguments have favoured the latter hypothesis; several of the derived features of Homo in Table 1 are proposed as adaptations to improve long-distance walking performance in more arid, open habitats.... These features include relatively longer legs, larger hindlimb and vertebral joint surfaces, narrower waists and shorter toes. Yet walking alone cannot account for many of the other derived features in Table 1 because the mass-spring mechanics of running, which differ fundamentally from the pendular mechanics of walking, require structural specializations for energy storage and stabilization that have little role in walking. Such specialized structures include: an extensive system of springs in the leg and foot that effectively store and release significant elastic energy during running; hypertrophied gluteus maximus and spinal extensor muscles that contract strongly to stabilize the trunk in running but not walking; and an elongate, narrow waist in combination with a low, wide, decoupled shoulder girdle that have an essential stabilizing function only in running.
They add two more features unrelated to walking but essential for ER: the thermoregulatory adaptations required to cope with the extreme mechanical and thermoregulatory challenges posed by running, and the shortened forearms and decoupling of the head and pectoral girdle.
Since these changes would have aided running but decreased human ability to swing in the trees, they speculate that walking was a by-product of selection for ER, rather than the other way around. More specificially, Considering all the evidence together, it is reasonable to hypothesize that Homo evolved to travel long distances by both walking and running. But that raises additional questions:
An even more difficult task is to determine what behaviours selected for ER in the first place. Why would early Homo run long distances when walking is easier, safer and less costly? All they can suggest is that maybe our ancestors had to compete for meat by running after prey, or travel farther to find it, before they learned how to make spears and bows and arrows. This hypothesis is difficult to test they admit, and additional research will be required. They speculate that the ability to run may have helped man find more protein-rich meat, which might have led to large bodies, small guts, big brains and small teeth, and all the rest of the characteristics that make us human. In conclusion, they comment, Today, ER is primarily a form of exercise and recreation, but its roots may be as ancient as the origin of the human genus, and its demands a major contributing factor to the human body form.
1Dennis M. Bramble and Daniel E. Lieberman, Endurance running and the evolution of Homo,
Nature 432, 345 - 352 (18 November 2004); doi:10.1038/nature03052.
2Carl Zimmer, Human Evolution: Faster Than a Hyena? Running May Make Humans Special,
Science,
Science, Vol 306, Issue 5700, 1283 , 19 November 2004, [DOI: 10.1126/science.306.5700.1283].
The physiological descriptions in this paper are wonderfully informative,
and must make
a thoughtful person stand in awe of the complexity required for such an ordinary thing as running.
Humans may not have the speed of a cheetah, the eyes of an eagle, the deep diving
ability of a whale or some other specialties, but for overall flexibility and performance,
the human body is unexcelled. Just watch the Olympics for proof: gymnasts, swimmers,
divers, sharpshooters, equestrians, pole vaulters, shot putters, weight lifters, basketball
players, cyclists, hurdlers, sprinters and marathoners exemplify the wide range of capabilities
designed into a two-meter, 65kg package. Add to that the ability to think, write,
create, compose, love, share, and speak, and you have every reason to respect the
sanctity of life. Let us never take these things for granted. Let us
live life to the fullest, and honor the Giver of these wondrous gifts.
Notice the stark contrast between the measurable science in this article and
the fluffy speculation about evolution. The authors supplied no clear transitional
forms, no relevant genetic phylogenies, and nothing but airy speculations about how
alleged ancestors might have lived in the plains of Africa such that they needed to
run. Necessity is the mother of invention, not evolution: invention is
intelligent design; evolution, on the contrary, is mindless and directionless, based
ultimately on accidents.
How could so many multiple, independent adaptations converge on the ability to run?
How many lucky mutations did that require?
Lets up the ante a little (actually, a lot).
The authors described running only on flat surfaces. How many additional adaptations
are required for running up and down stairs, running up and down hills, or hopping from
boulder to boulder across a river? How about all the leaping, twisting, dribbling and
slam-dunking in a basketball game, or the dramatic movements of a gymnast on floor
exercise or the balance beam? Keep in mind that its not just the skeleton,
joints and muscles that need to be adapted for these things. All the bodys
systems must be prepared for the jolts of running: circulatory, endocrine, reproductive,
nervous, sensory, digestive, excretory, lymphatic and respiratory from the
subcellular level, to the tissue, to the organ, to the integrated body. A lucky
mutation here or there will accomplish nothing, and will likely be selected against and removed,
unless every change is synchronized to the whole function. But didnt we
just learn last month that epistatic interactions prevent this, effectively falsifying
the neo-Darwinian paradigm? (see 10/19/2004 headline).
On top of all that, the body knows how to maintain itself, and can usually repair
most kinds of damage. And the whole system runs on potatoes!
Despite the Darwinian bluffing, rather
than contributing knowledge to
evolutionary theory, these authors actually made the situation worse for the Darwin Party.
They pointed out that running is not a by-product of walking it requires
too many independent structural adaptations. And they emphasized numerous physiological
traits that make humans outdistance our supposed nearest ape-like ancestors, the chimpanzees
you know, the primates that evolutionists keep telling us have genes 98.5%
identical to ours (an oft-repeated mythsee 09/22/2002
headline). We ask again: does the actual evidence point to evolution, or to
creation? Get off your hypertrophied gluteus, go jogging, and think about it.
You were made for running and thinking. A little sweat (both mental and physical) will do
wonders
for your soul.
Next headline on:
Human Body
Physics
Early Man
Mammals
Darwinism and Evolutionary Theory
Amazing Facts
Ankylosaurs Were Built for Defense
11/16/2004
Like walking tanks, ankylosaurs were heavily shielded.
An in-depth study of dinosaur armour has revealed an unexpected new level
of strength, with some plates having a weave of fibres resembling todays
bulletproof fabrics, reports New
Scientist. Researchers studying the coin-sized plates found that:
....the pattern of collagen fibres was highly organised in three dimensions.
They had sets of structural fibres running parallel and perpendicular to the
surface, and then further sets at 45° to each of these axes, providing strength
in all directions. The fibres of the bulletproof fabric Kevlar are similarly arranged.
The article talks about other related dinosaurs with less coverage, but mentions
them not as ancestors but a coevolution, with the ankylosaurs
acquiring better armour at the expense of speed.
No mention is
made of how close-knit stitching of protein chains arose to produce these
structures, nor how the genetic code emerged to cover the entire
animal, nor how the embryonic development program grew them at the right places
at the right times. An evolutionary tale requiring too many lucky mutations
is like an alibi with too many improbable circumstances.
The ankylosaurs may be extinct, but there are other heavily shielded
animals today: turtles and armadillos, for some. Collagen is an amazing,
versatile protein that can be as tough as armor, or as soft as babys skin.
A reader comments:
About midway through the article is read Scheyer and Sander conclude
that ankylosaur species evolved progressively better armour plates to
withstand the great crushing forces applied by the hungry jaws of its
predators.
Wouldnt this imply an intelligence to evolution? I can see natural
selection happening the stronger shells happen to survive but to
suggest this as a reason for their development is quite different.
Wouldnt the evolutionary desire for stronger shells be selected out
after each crushing force of a hungry jaw. Just how does
evolution network with a dead animal?
Next headline on:
Dinosaurs
Amazing Facts
Beavers Know the Value of Dough
11/16/2004
According to a story in the Baton Rouge paper The
Advocate, beavers found some bags of stolen money from a casino and used the bills
as stuffing for their dam. No charges have been filed against the beavers,
though their home was ransacked by the search.
This was too good to pass up. Not sure what
the moral is, but you can make up your own. Should be good for some cartoon
captions, too: Dont gamble on your future; theres thousands of
dollars of equity in your home, advertises the beaver mortgage broker.
Should I invest my cash in real estate? asks a young customer.
Gnaw. Go against the flow: civil engineering is the best dam
business around for a young pup like you; home values will collapse unless you first
stop the runaway flow of currency.
These leaves taste funny, Pa; I dont want to get sick and cash in my
chips. Quit worrying, son, they come from a money tree.
Keep busy, and watch the bottom line.
The sheriff should realize the
cash wasnt doing anybody any good in a casino, so he should
leave it to beaver.
Send your entries here.
Beaver couple gazing at the Hoover Dam. and you thought I put a lot of
cash in ours!
When you said take this and put it into our dam, I didnt know you
meant as concrete.
Oh! Thats what the money was for!
Next headline on:
Mammals
Mars Methane: Is It the Breath of Life? 11/14/2004
The methane oozing from Mars is real, says New
Scientist, and leading planetary scientists agree. Wheres it coming
from? Methane does not survive for long in the Martian atmosphere. It
could come from clathrates, or from an impacting comet that contained some.
Or it could come from living organisms. All eyes are on Mars to find out.
One planetary scientist quoted in the article calculated
that if a comet containing only 2% methane struck Mars, the methane could survive 2000
years. But he also calculated that the plentiful dust devils would destroy the
methane at a high rate. If methane has always been leaking from Mars, they are
at a loss to find a plausible source. The lack of known geological processes that could maintain it
for billions of years is tempting some to believe it might come from living organisms. But that
conclusion comes more from a bias toward long ages than any evidence that methane
and rocks and water will create life far from it. This will be an interesting
story to watch. If life is detected, will it be found to have
arrived from Earth? If not, will it put more pressure on scientists to give up
the idea that Mars is billions of years old? Stay tuned.
Next headline on:
Mars
Geology
Origin of Life
Evolutionary Atheist Portrayed as Priest 11/14/2004
Is evolution a religion? Do evolutionists engage in just-so storytelling?
Darwinists wishing to keep evolution looking scientific may wince at
National
Geographics choice of words for its interview with Richard Dawkins:
Evolutions High Priest Returns With New Tale.
The tale that interviewer James Owen refers to is the title of Dawkins latest
book, The Ancestors Tale (see 09/12/2004
headline). The pro-Dawkins interview reveals some other religious and political
facts about the worlds leading evolutionist:
- Bush Bash: Owen seemed a little alarmed that Dawkins was overtly
political in the book: Dawkins doesnt always come across as the
dispassionate scientist. Given that the book covers four billion years
of evolution, readers might be surprised by a number of critical
references to President George W. Bush and the current U.S. administration.
- Darwin Bash: Believe it or not, Dawkins is anti-Darwinian
in his own personal context. When asked whether medicinal drugs, education and
the rule of law were disrupting our own natural evolution,
Dawkins was quick to distance himself from Darwins curse:
Most of us have had our lives saved by medical science, probably more than
once, and I am all for it, he said in the interview. As an academic
scientist I am a passionate Darwinian, in the sense that I believe Darwinian natural
selection is the explanation for all life. But as a citizen I am an
anti-Darwinian! I do not want to see the ruthless callousness of natural
selection taking its toll of human life and happiness.
- Creation Bash: Dawkins, as usual, has no tolerance for creationists,
though this time he dropped the words insane or wicked:
He said, I know perfectly well that these people are not stupid but ignorant.
Ignorance is no crime and it is easily cured by education. What annoys me
is the religious groups who actively work to prevent
scientific education. And it doesnt just annoy me.
It annoys respectable theologians who worry that creationism besmirches the
reputation of true religion.
Owen described Dawkins in religious terms:
In telling the story of evolution, it might seem odd that Dawkins,
a self-proclaimed atheist, should cast himself as a pilgrim.
Then again, he has been called the high priest of evolution, with
Charles Darwins The Origin of Species as his bible.
Dawkins illustrates the proverb that no life is ever a complete
waste; it can always be used as a bad example. He provides his disciples excellent
training in how to shoot oneself in the foot. His self-refuting and contradictory
statements (i.e., religion is an evolutionary adaptation and there is no God, but speaks
of true
religion) provide useful case studies on logical fallacies. His cross-eyed expression
while tripping out over the wonders of nature and the mindlessness of natural selection provide comic relief
(see 09/12/2004 headline). His zeal for
evolution is both passionate and NIMBY (not in my back yard): like a Massachusetts liberal
all in favor of putting a nuclear waste dump in Nevada, he doesnt want the ruthless callousness of
Darwinian natural selection to get close to him.
His anti-conservative political views exemplify our claim that the Darwin Party leans
strongly liberal-leftist in ideology (see 09/22/2003
commentary), as did Chairman Charlie (see
04/29/2004 commentary). And his tirades
about the creationists wanting to prevent scientific education illustrate the
Big Lie at work today: creationists want the students to
hear more about evolution, including the problems and criticisms, while the
Darwinists insist on one-sided indoctrination (see next entry).
And finally, his atheist-priest title adds to the list of amusing oxymorons.
Yes, Dr. Dawkins, keep those useful quotes coming. We especially liked the
one with the 11-second silence, complete with furrowed brow and deep breath, when asked
if any mutation or evolutionary process was known to add information to the genes.
Quotes are juicy, but silence is golden.
Next headline on:
Darwinism and Evolutionary Theory
Politics and Ethics
Does Darwin Need a Shower? 11/14/2004
Science says that Wisconsin is trying to water down Darwin.1
That could be taken one of two ways. Either Darwin is dirty, or his teachings are
being diluted by competition. It can safely be assumed the news reporter meant the latter:
Wisconsin academics are rallying to reverse a decision last month by a local school
board that would require students to study various scientific models/theories
of origins rather than stick with Darwinian theory only.
The decision prompted Michael Zimmerman (U of Wisconsin) to gather hundreds of signatures from
scientists, academics, teachers and theologians to send as strong a message
as we can to protest the more inclusive standards.
This decision, along with the one in Dover, Pennsylvania to approve
the teaching of intelligent design (see 11/05/2004 headline),
made Eugenie Scott of the NCSE lament, After last Tuesday there are a lot of
happy creationists around the country.
On November 12, Agape
Press printed a story about school boards in Wisconsin, Pennsylvania and Texas
working to permit criticisms of evolution in science classes.
1ScienceScope: Wisconsin Academics Decry Move to Water Down Darwin,
Science,
Volume 306, Number 5699, Issue of 12 November 2004.
We thought that competition and survival of the fittest
was good for evolution. Why not be consistent, Darwinists? The fittest
are apparently 82% to 12% against evolution-only indoctrination
(see 10/18/2004 headline). Maybe you should look at
the intelligent design movement as something that evolved for the fitness of the human race.
Whatever is, is right. Whatever will be, will be. Dont let your own
memes be so selfish. Get with the game; since nothing in biology makes sense except in the
light of evolution, this is apparently the hottest evolutionary trend.
Dont worry, be happy.
Next headline on:
Darwinism and Evolutionary Theory
Intelligent Design
Education
Fish Colors Not Driven by Evolutionary Forces 11/14/2004
Why do tropical fish sport such vivid colors? Are they signaling for mates,
and flashing warnings to predators? Or are they used for camouflage?
Evolutionists are not sure, according to a story in Science News.1
Sexual selection does not seem to explain the colors, because often both sexes
look alike. To understand fish coloration, we have to see as the fish sees, cautions Susan Milius in the
article. Some researchers believe that, to a fish, the colors may look vivid up close but
may blend in with the background over a distance. If so, It may be possible
to whisper and shout at the same time.
Gil Rosenthal of the Boston
University Marine Program is convinced of one thing: Evolutionary forces
arent pushing fish toward conspicuous colors. The article includes a
montage of the bright colors in fish skin. The caption reads,
Close-ups of fish skin reveal the abundance of dramatic colors that has inspired
theorists for more than a century, though plenty of their ideas about the evolutionary
forces behind the colors havent held up.
1Susan Milius, Hide and See: Conflicting views of reef-fish colors,
Science News,
Week of Nov. 6, 2004; Vol. 166, No. 19 , p. 296.
Evolution is not a force. A force has magnitude
and direction. Evolution is aimless, purposeless, directionless.
As simple a thing as skin color requires genes, organelles, molecular motors and
developmental programs, to say nothing of the eyes with which to see the results.
Natural selection and sexual selection are powerless to drive dumb fish to
invent the molecular factories that produce
such gaudy clothing. Since evolutionists have had over a century to
explain this and have come up empty, can creationists get a turn?
Maybe the Lord, the
all-wise Creator of life, likes variety. Psalm 104 says, Here is the sea
great and wide, which teems with creatures innumerable, living things both small and
great. There go the ships, and Leviathan, which you formed to play in it
(Psalm
104:25-26). Why would God form a creature for play in the water?
Why not? The effect harks back to the cause: God loves creativity, art, goodness
and beauty. He takes pleasure in the breaching whale and the snow-sledding
otter, the eagle and the deer and the angelfish.
The overwhelming variety of color and ability in the animal kingdom is a testimony to
Gods creativity and wisdom.
Evolutionists may quibble over which just-so
story might work to explain this or that, but every time they look for a clear-cut
explanation in a specific instance, it evades them (see the peppered moth update, for example, in the
06/25/2004 headline one of their most celebrated
cases of evolution). The mindless mechanisms of natural selection
are futile to explain complex functions and beauty. Omniscience and omnipotence,
coupled with goodness and wisdom, are more than adequate. Science is supposed
to believe in cause and effect. Lets put design back
at the scientific table where it belongs.
Next headline on:
Fish and Marine Life
Darwinism and Evolutionary Theory
Gas Giants Belch Surprises 11/14/2004
No sooner had the Cassini spacecraft arrived at
Saturn, when the surprising discoveries began rolling in faster than they can be
interpreted. Uranus the Magician is also putting on an act.
Heres whats hot in the cold outer solar system:
- Ring theft: Saturns little moon Prometheus may not steal fire
from the gods, but is stealing material from Saturns F-ring, reports
New Scientist.
Presumably the little klepto is not putting it back, or they would say it was just
borrowing it.
- Groovy rings: A new ultraviolet image of Saturns A ring
(see SpaceRef.com) shows
finer detail than ever before seen. The waves generated by moons like Janus
stimulate particles to bounce against each other, and thereby lose material.
The JPL
press release (Nov. 8) by the ultraviolet imaging team speaks of other dynamic
activity around the ringed planet, including
an ever-changing vista at the frontiers of Saturn, featuring wayward moons,
colliding meteoroids, rippling rings and flickering auroras.
- Groovy musical rings: As if the visible resemblance of Saturns rings to
a phonograph record were not enough, heres another new likeness: the rings make music!
New Scientist reports
that the radio and plasma wave science (RPWS) experiment on Cassini detected
radio waves in the rings that, when reduced to human frequencies, sound like a
melodic series of musical notes. Principal investigator Don Gurnett
was completely astonished by the surprising discovery.
OK, who, or what, is playing our tune? The short answer is, impacts. Meteoroids
a centimeter in size (more or less by up to a factor of ten), when they strike the rings
at high speed, generate radio waves that
the RPWS instrument is detecting. The tones last about one to three seconds and are
distinct. They might be related to the spoke-like features that
Voyager 1 had detected in 1981. This new radio observation, and others, are leading the Cassini scientists like
Larry Esposito to recalibrate the age of the rings downward by a factor of ten.
The tones suggest the rings are even more dynamic and unstable than had been thought,
New Scientist continues. If the rings had been in their present configuration for
more than about 10 million years, their composition would have been thoroughly mixed
and would now be uniform, according to dynamical models. (The old estimate had
been 100 million years, still far younger than the solar system is presumed to be.)
- Titanic mystery: Scientists still dont know what to make of
Titan after the 750-mile flyby October 26. Planetary scientists think they see
an ice volcano spilling slushy ice (see report and picture on
BBC News
and JPL).
For more of the intriguing radar images, see
The
Planetary Societys report.
The data are still confusing, but one realization is emerging: the lack of
impact craters means Titans surface is young
(see JPL
press release from Oct. 29, for instance).
- How dry I am: Another enigma about Titan concerns the lack of
evidence for lakes and oceans of ethane or methane. Titan seems dry,
although the roughness in the images could be caused by winds roughing up the
liquid, if there is any. See report on New
Scientist that says that the paradigm of a moon covered in lakes or oceans up
to three kilometers deep has
been shaken to its foundations by the new observations. There had
been hope that these bodies of liquid might harbour early stages in the development
of biological molecules, and perhaps even simple forms of life, the article
reads, but all that has changed. The Huygens Probe may have to
land on a solid surface come January 14, to the slight dismay of its scientific team
(although it can survive an impact on solid, too).
- Cracked moon: Cassini snapped a preview shot of the battered
moon Tethys, better than Voyagers (see
The Planetary
Society report). Scientists are eager to investigate a huge canyon named
Ithaca Chasma that formed when an impacting body cracked the moon from pole to pole.
- Stormy weather: A photo of Saturns storm alley
made Astronomy Picture of
the Day. The caption ends, Although the above image provides data and clues,
the power behind Saturns storms still remains a mystery.
- Uranus activity: Long thought bland and dull, the planet Uranus is
showing more activity and diversity in its cloud patterns than expected, reports
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