Wednesday, August 05, 2009

Forward Into the Past!!

James Owen of National Geographic is reporting that the Sahara Desert (which is actually a fairly recent phenomenon—since the end of the last glacial maximum) is going green. He writes:

Images taken between 1982 and 2002 revealed extensive regreening throughout the Sahel, according to a new study in the journal Biogeosciences.

The study suggests huge increases in vegetation in areas including central Chad and western Sudan.

Oddly, NG's own map of global warming simulation suggests that if warming continues the middle of the Sahara will be subject to reduced growing seasons. Right now, much of the Sahara has NO growing season. This will be a boon for agriculturalists, not the other way around. Time to update the map.

This tracks with alternating periods of lushness and dryness. Both Sahelanthropus and Australopithecus Garhi, which were found in Sahel and Chad, respectively, were in association with forested/grassland environments.

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Tuesday, August 04, 2009

Francis Collins, Bill Maher and Josh Rosenau

Josh Rosenau has an interesting post at Thoughts from Kansas about the criticisms that have been leveled at Francis Collins because of his vocal Christian stance. He writes:

Collins is criticized mainly for two sets of claims about science and religion. The first, that the universe is fine-tuned for the existence of human life, the second is that the "Moral Law" cannot be explained scientifically. There is a consensus that the universe's physical constants cannot be much different than they are for life to exist, but no consensus why the universe has those values. Some people think there are a lot of universes and it is inevitable that one would have the combination of values we see in ours. Others seek physical laws which limit the range of variation in universal constants. Nothing Collins says attacks any consensus, and he has made clear that he has no aversion to scientific explanations for this phenomenon. As for the second point, there is no consensus about the origin of morality. There's good scientific evidence for the origins of altruistic behavior, but Collins seems to be aiming at a broader metaphysical meaning for "Moral Law," and has walked back comments suggesting that altruism was scientifically inexplicable.

Again, no denial of scientific consensus. He was wrong about a scientific claim (which Jason notes is not inherently anti-science), but corrected himself when he learned new information. That's how scientists work. By contrast, Maher has been challenged and corrected on his anti-vaccine and anti-germ-theory claims, but has not modified or abandoned those claims in the light of new evidence. That is decidedly contrary not just to scientific knowledge, but to the scientific process.

Rosenau is very sharp and correctly points out that there is no evidence that Collins has ever used his Christianity to sway his scientific decisions. He also points out that those who criticize him do so for his religious beliefs, not his scientific pursuits and successes. He also points to a potential problem that most people who are Christians and practicing scientists encounter—that election or appointment to any post that is as lofty as the NIH should have as a "litmus test" in that the candidate espouse no religious perspective at all. This is absurd. It demands a completely reductionistic view of the universe that is neither warranted nor unwarranted based on the available evidence. Science simply cannot speak to it. Just because these scientists have chosen to not believe in God does not mean a competent, highly qualified scientist has to do the same. A tip of the hat, Josh.


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IRS Can Shut Down Dinosaur Adventure Land

The Kent Hovind-created Dinosaur Adventure Land is in danger of being shut down, according to a story in the Pensacola News Journal by Kris Wernowsky. The story notes:
A ruling this week says the nine properties that make up Dinosaur Adventure Land, and two bank accounts associated with the park will be used to satisfy $430,400 in restitution owed to the federal government.

Kent Hovind, who founded the park and his ministry, Creation Science Evangelism, is serving 10 years in federal prison as a result of a tax-fraud conviction for failing to pay more than $470,000 in employee taxes in a long-running dispute with the Internal Revenue Service.

Kent Hovind was found guilty in November 2006 on 58 counts, including failure to pay employee taxes and making threats against investigators.

The East Peoria, Ill. native sparred with the IRS for 17 years before his conviction. He claimed no income or property since he was employed by God and said that his ministers were not subject to payroll taxes.
Employed by God? I, somehow, don't think my pastor would claim that and then quit paying taxes. That is amazing. Get the bulldozers!


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ERV Challenge - A Response to Dr. Hunter

A blogger named Bitbutter asked Cornelius Hunter if there were examples of ERVs that did not fit the evolutionary pattern. Dr. Hunter wrote, through Casey Luskin, that there were and that he has written about them in his book Science's Blind Spot. Here is Bitbutter's response:



It is easy to see where Dr. Hunter got off track. The key is not to look for whether all of a species' descendant species have the ERV, but whether or not that ERV can be found in a common ancestor to the descendant species. Then you have to explain the sheer number of them.



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God's Philosophers

As good as their word, Icon Publications sent me a desk copy of God's Philosophers: How the Medieval World Laid the Foundations of Modern Science.



I am looking forward to reading it.

Monday, August 03, 2009

Cold Weather and Bigger Brains

Bob Holmes of the NewScientist has a report on brain size and hominid evolution, in which it is hypothesized that modern human brains could only expand when the air temperature was cold enough to allow for adequate heat dissipation—a glacial maximum for example. He writes:

For all its advantages, the modern human brain is a huge energy glutton, accounting for nearly half of our resting metabolic rate. About a decade ago, biologists David Schwartzman and George Middendorf of Howard University in Washington DC hypothesised that our modern brain could not have evolved until the Quaternary ice age started, about 2.5 million years ago. They reckoned such a large brain would have generated heat faster than it could dissipate it in the warmer climate of earlier times, but they lacked evidence to back their hypothesis.

Now hints of that evidence are beginning to emerge. Climate researcher Axel Kleidon of the Max Planck Institute for Biogeochemistry in Jena, Germany, modelled present-day temperature, humidity and wind conditions around the world using an Earth-systems computer model. He used these factors to predict the maximum rate at which a modern human brain can lose heat in different regions. He found that, even today, the ability to dissipate heat should restrict the activity of people in many tropical regions (Climatic Change, vol 95, p 405).

One of the big questions surrounding the research is whether or not the climate data has the kind of resolution that is necessary to support the hypothesis:
Given the timescales involved, it may be near-impossible to match definitively the onset of an ice age with speciation, but a 1.5 °C drop is consistent with the cooling climate of the time, says Middendorf.
It is an intriguing idea and bears more investigation but I suspect it may be one of many variables driving brain size expansion at the time.


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Homo floresiensis: An Early Split?

Debbie Argue of the Australian National University has published research suggesting that the remains consisting of Homo floresiensis diverged from the main hominin/hominid line as early as the early Pleistocene or late Pliocene, between 2 and 2.5 million years ago. The story, in ANU News, reports:

“Until now much of the debate about H. floresiensis has rested on analysis of the morphology and measurements of the remains found on the Indonesian island of Flores in 2004,” Ms Argue said. “Despite evidence supporting the idea that H. floresiensis constitutes a new species, some researchers continue to argue that it is the remains of a sick modern human or a near-human ancestor affected by island miniaturisation.”

To try to settle the debate, Ms Argue and her colleagues compared up to 60 characteristics from a range of early hominins, including H. erectus, and modern humans. They used two different computer-based modelling systems, testing relationships between the species to find the most parsimonious, or simplest, evolutionary line.

“Our cladistic analyses created two very similar evolutionary trees that establish a very early origin for H. floresiensis back around the emergence of the very first members of the Homo family. This suggests that H. floresiensis was not a sick modern human, not even a very close relative.

This, of course, assumes that the remains are not pathological, a position that has adherents. Recent studies have suggested that this is not the case, however. One has to be very careful in conducting cladistic analyses, which are trait driven, not morphologically driven. The specimen involved cannot have post-mortem deformation and the traits must be extremely clear. The article continues:
“The late survival of H. floresiensis on Flores could turn over the idea that H. sapiens was the only hominin around after the extinction of H. erectus and the Neanderthals,” Ms Argue said. “These two ideas represent paradigm shifts in the field of anthropology, forcing us to reconsider our long-held ideas about our species and its place in the world.”
If there was a second species running around after the transition from Homo erectus to Homo sapiens, it does raise questions about how many there might have been at other times. There is, for example, considerable morphological variation in Homo erectus in China, when compared to that of South East Asia and Africa. Whether this is suggestive of more than one species is not quite clear, though. If human evolutionary history is more like a bush than a tree, then this finding is in keeping with that idea. It is the same thinking that drove the idea to split Homo erectus into Homo erectus and Homo ergaster.


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Email From the Discovery Institute

The DI wrote me back about Cornelius Hunter's email address. This is their response:
Good morning, Mr. Kidder!

Thank you for your email. Unfortunately, we do not disclose the contact information for our fellows, but I would be happy to forward any message or question you may have for him.

We appreciate your interest in Discovery Institute!

Kind regards,

Mollie Tschida

Mollie Tschida
Director of Events & Membership
Discovery Institute
208 Columbia Street
Seattle, Washington 98104
molliet@discovery.org
www.discovery.org
I find this response peculiar in the extreme. Why would a scientific institute not want to publicize its fellows' email addresses? At no academic institution that I am aware of do they not publish the faculty members' email addresses. In fact, if a researcher writes a scientific paper, the email address is always listed at the bottom. That way, anybody interested in the paper can contact the author. This forces me to ask the question of Dr. Hunter using a proxy. Fine. I'll do it.
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Saturday, August 01, 2009

Dr. Cornelius Hunter

I have written the Discovery Institute to see if they have an address for Dr. Hunter. My experience so far is that they don't return emails. I hope this is different.

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Friday, July 31, 2009

Cornelius Hunter on How Religion Drives Science

The Discovery Institute's newsletter, Nota Bene, has a blog post by Cornelius Hunter titled: Are Evolutionists Delusional (or Just in Denial)? That's a provocative title, so let's see just what he means. He writes:
In one moment evolutionists make religious arguments and in the next they claim their theory is "just science." Their religious arguments, they explain, really aren't religious arguments after all. Gee, that was easy. In light of such absurdity, I don't have much confidence that evolutionists are going to think more deeply about this. But it would be nice if they would stop misrepresenting science. And it would be nice if they would stop using their credentials to mislead the public. In short, it would be nice if they would stop lying.
To what is he referring when he states this? He is taking to task Jerry Coyne, author of Why Evolution is True. Coyne has engaged in the classic argument that, if Intelligent Design is the way things are, why do they look so, well, unintelligently designed? Coyne writes:
The reason why the recurrent laryngeal nerve, for example, makes a big detour around the aorta before attaching to the larynx is perfectly understandable by evolution (the nerve and artery used to line up, but the artery evolved backwards, constraining the nerve to move with it), but makes no sense under the idea of special creation — unless, that is, you believe that the creator designed things to make them look as if they evolved. No form of creationism/intelligent design can explain these imperfections, but they all, as Dobzhansky said, “make sense in the light of evolution.”
Hunter correctly points out that this is, in many ways, an argument from personal incredulity. We have no idea how God would or would not design an animal. We can only show how the animal is designed and compare that design with what came before and what comes after. There is a fabled exchange between Albert Einstein and Neils Bohr in which Einstein is reported to have said "God does not roll dice with the universe," to which Bohr remarked "How does Einstein know what God will or will not do?" However, Coyne's secondary point is not addressed by Hunter: if God designed the laryngeal nerve in this way, it sure looks a hell of a lot like evolution. I have long contended that if God did design everything in "progressive creation" fashion, He did so in such a way that it looks so much like evolution that we can't tell the difference.

But then the wheels fall of the wagon. Hunter writes:
But nature's organisms do not look as though they evolved. Except, that is, if one assumes that God would never have designed the recurrent laryngeal nerve. Again, we're back to assumptions about design. Evolutionists are so deep in their own metaphysics they don't even realize it.
The link is to a paper that Hunter wrote called Darwin's Predictions, a lengthy, sprawling paper that I will tackle in another post. Suffice it to say his principle point, that organisms don't look as though they have evolved is patently false. The reason there is theory of evolution is because that is EXACTLY what organisms look like. When Darwin and Wallace first concocted the idea of Natural Selection, it is because the creatures they were examining looked as if they had evolved. Long before they came up with natural selection, naturalists had thought that some form of evolution took place, reflecting what the natural world and the fossil record showed. It doesn't look like evolution if you refuse to accept that evolution happened. Hunter continues:
Evolution has no scientific explanation for how the recurrent laryngeal nerve, or any other nerve for that matter, evolved. It is a vacuous theory. But it knows they must have evolved because God would not have done it that way.

In fact, evolution has no solid basis for even thinking these designs are necessarily poor. This is more religion making its way into the argument, as the assumption of poor design is itself a motif of evolutionary thought. When in doubt, evolutionists assume lack of function or poor design. It is not a scientific finding so much as a consequence of the belief that evolution is true.
This is also absolutely false. Neil Shubin, in his book Your Inner Fish, describes in detail how our common ancestry with fish explains why we have this circuitous nerve arrangement. If you reject evolution, like Hunter has, then this explanation doesn't work. But given the MOUNTAINOUS amount of evidence for evolution involving all of the biosphere, Coyne, Shubin and others are simply applying Occam's Razor to the problem. If you have a ready-made explanation for something, to posit a supernatural one that carries no empirical weight is not parsimonious. Such a statement has no bearing on whether or not God exists, but rather how the nerve was designed: by evolution or by fiat. God could reasonably do either. He writes:
In fact, evolution has no solid basis for even thinking these designs are necessarily poor. This is more religion making its way into the argument, as the assumption of poor design is itself a motif of evolutionary thought. When in doubt, evolutionists assume lack of function or poor design. It is not a scientific finding so much as a consequence of the belief that evolution is true.
This is not precisely true. For example, there are twenty-three different forms of eye in the biosphere, all of them very different, with different developmental trajectories. It is relatively easy to make observations about an animal in its environment and then determine which traits help it to survive and which are disadvantageous. For instance, when the mutation for albinism occurs, it puts the person at a disadvantage because they have to stay out of the sun. That is easy enough to determine.

Some eye designs are optimized for their environment. The human eye, because of the way the optic nerve develops, has a blind spot where the nerve comes into the back of the eye. Other eye designs do not have this problem. It is very easy to determine whether or not something is designed well or poorly. However, to say "if I were an engineer, I would never have designed it this way" is not the same as saying "God would not have designed it this way." Bohr is right in this respect. Hunter continues:
Finally, Coyne makes a standard evolutionary appeal to a famous paper by evolutionist Theodosius Dobzhansky. Dobzhansky was one of the twentieth century's leading evolutionists and he wrote a paper entitled "Nothing in biology makes sense except in the light of evolution."

The title itself reveals the metaphysical message and, not surprisingly, the paper was a tirade against divine creation. It is now a classic example of theological naturalism in action. The paper's title has become one of the most memorable and quoted phrases for evolutionists--another constant reminder of the theology embedded in their thinking.
This is absurd. There is nothing metaphysical about the title of Dobzhansky's paper (the phrase "Nothing in biology makes sense except in the light of evolution" is the title of the paper, by the way. Dobzhansky never actually says that in the paper.) In the 1700s and 1800s, naturalists were scrambling to try to figure out how all of the creatures in the world were connected. While it was certainly true that Linnaeus' classification system was devised to catalog God's creation, it soon became apparent that all organisms were related to each other. This problem was intensified when it became clear that the earth was yielding up the remains of animals that looked similar to the ones that were in existence but were not quite the same. Worse, the further down you dug, the less similar they were until you encountered the terrible lizards, to which there was no modern analogue whatsoever. Was each creature created individually by divine fiat? Or was there some mechanism by which they were all linked? As far back as Count Buffon, naturalists realized that it only made sense if the modern forms had descended, in some way, from the fossil forms. In 1856, Charles Darwin and Alfred Russel Wallace provided that mechanism: natural selection and common descent.

As far as Dobzhansky's paper is concerned, the title is an observational statement. He writes:
The evidence of fossils shows clearly that the eventual end of most evolutionary lines is extinction. Organisms now living are successful descendants of only a minority of the species that lived in the past and of smaller and smaller minorities the farther back you look. Nevertheless, the number of living species has not dwindled; indeed, it has probably grown with time. All this is understandable in the light of evolution theory; but what a senseless operation it would have been, on God’s part, to fabricate a multitude of species ex nihilo and then let most of them die out!
Theodosius Dobzhansky was a devout Jesuit and firm believer in God. His conundrum, like that of so many of us, was the he could not see how it was in keeping with God's personality to create by divine fiat a species only to kill it off. To him it made more sense that He used evolution. Is this argument from personal incredulity? In a sense, yet it is. But it is also the use, once again, of Occam's Razor. The simplest explanation, all other things being equal, is usually the correct one, especially if you already have a mechanism to explain it. Dobzhansky's paper is a tirade against creation only if you accept that the earth was created six thousand years ago and there is no evolution. Is his reasoning, as Hunter states, theological? No, quite the opposite. It is empirical. Evolution can explain these things, progressive creation has a bit more trouble and recent-earth creationism cannot, whatsoever.

Hunter finishes the paper thus:
Whether evolutionists are liars, delusional or in denial is difficult to say. What is obvious is that evolutionary thought is bankrupt. Religion drives science, and it matters.
Here he has overplayed his hand. He doesn't write religion drives evolution, he writes religion drives science. Evolution isn't the problem, science is. This is peculiar coming from a biophysicist. How does religion drive his science, since by his own admission, it must? I would like to ask Dr. Hunter this question, as well as how much coursework he has had in comparative anatomy, zoology and palaeontology, but there is no mechanism by which to contact him on his blog. That is unfortunate. I would also like to know how much astronomy or astrophysics he has had, since my suspicion is that he is a young earth creationist.

If evolutionary thought is bankrupt, how does he explain the fossil record? How does he explain observable speciation in modern biomes? If "Evolutionists" use religion to drive their science, how does he explain the ERVs that we share with the higher primates? We get no hint of answers to any of those questions from this vitriolic, insulting post in which he clearly has no respect for scientists who, for the last 150 years have produced some of the finest scientific work in trying to understand how modern organisms are connected to each other and how they are connected to those which came before.

Another Discovery Institute hatchet job.

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Thursday, July 30, 2009

As I Was Saying...

Dan Kennedy of The Guardian has a story on how the publicity surrounding the "Birthers" (the mistaken idea that Barack Obama was not born in the United States) is giving the United States a bad name on the world stage. Kennedy's piece is more a glorified book review than anything but he makes some good points along the way. The book he is reviewing is Charles Pierce's Idiot America: How Stupidity Became a Virtue in the Land of the Free. Kennedy writes:
Idiot America – not the book, but, rather, a state of mind – is based on what Pierce calls three "Great Premises":

1. "Any theory is valid if it sells books, soaks up ratings or otherwise moves units."

2. "Anything can be true if someone says it loudly enough."

3. "Fact is that which enough people believe. Truth is determined by how fervently they believe it."

These premises, Pierce argues, are at work in absurdities such as the very loud, very public and very idiotic controversies over "intelligent design" (the story of Genesis dressed up as science), the fate of Terri Schiavo (a brain-dead woman who spent years being kept breathing in a Florida hospice thanks to the intervention of talkshow hosts and cynical politicians) and global warming (Pierce spends some time in Shishmaref, Alaska, a once-frozen village now literally melting into the Pacific Ocean).
The problem is that these people are well-funded and their operations are well-staffed. Not a day goes by that there is not a story somewhere about the Discovery Institute and their relentless attacks on the teaching of evolutionary theory, attacks that a large section of the public is quite willing to accept as truth.

Is the DI's principle spokesman a biologist? No, he's a lawyer with no training in biology. When they tout a list of scientists who dissent from evolution, does it matter that there are no field biologists on the list and only one palaeontologist? Not to the general public, many of who are quite willing to believe that the earth was created 6 000 years ago, despite the fact that there is as much evidence for that as there is that the earth is flat. P.T. Barnum once said that people have a tremendous "need" to be fooled. Sadly, that happens all too often here.

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From Bottleneck to Expansion

Once modern humans began to assert themselves on the landscape, data suggests they took off. ScienceDaily is reporting that beginning around 40 000 years ago, the human population began expanding:
Reconstructions of the timing and magnitude of changes in human population size are important for understanding the evolution of our species. There has been a longstanding disagreement whether humans began to increase in number as a result of innovative technologies and/or behaviors formulated by hunter-gatherer groups in the Late Pleistocene, or with the advent of agriculture in the Neolithic. Hammer's research integrates empirical genetics with discoveries in paleontology and archeology to help provide answers to interdisciplinary questions about which kinds of innovations led to the evolutionary success of humankind.
The article appears in PLoS One and can be read here. The authors conclude:
The data from the three surveyed non-African populations (French Basque, Chinese Han, and Melanesians) are inconsistent with the simple growth model, presumably because they reflect more complex demographic histories. In contrast, data from all four sub-Saharan African populations fit the two-phase growth model, and a range of onset times and growth rates is inferred for each population. Interestingly, both hunter-gatherers (San and Biaka) and food-producers (Mandenka and Yorubans) best fit models with population growth beginning in the Late Pleistocene. Moreover, our hunter-gatherer populations show a tendency towards slightly older and stronger growth (~41 thousand years ago, ~13-fold) than our food-producing populations (~31 thousand years ago, ~7-fold). These dates are concurrent with the appearance of the Late Stone Age in Africa, supporting the hypothesis that population growth played a significant role in the evolution of Late Pleistocene human cultures.
The late Stone Age at this point coincides with the recession of the ice at the tail end of the Late Würm glaciation and is coincident with the appearance of modern humans in Europe and several other areas of the Old World. It also accounts (at least in part) why technology takes off at such a fantastic clip beginning with the Upper Palaeolithic period. A critical mass of people drive new ideas and technology. It also helps that your tundra line doesn't begin at Vienna.

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Darwin Was Right

Or at least his grandson was. Apparently, one of the younger Darwin's ideas was that the movement and mixing of water between the equator and poles is influenced by sea life, who swim through the water. This was an idea that was largely ignored until recently. As a report appearing in PhysOrg notes:
Using a combination of theoretical modeling, energy calculations, and field observations, researchers from the California Institute of Technology (Caltech) have for the first time described a mechanism that explains how some of the ocean's tiniest swimming animals can have a huge impact on large-scale ocean mixing.
The idea was largely discarded because it was felt that the movement of the ocean would overwhelm any movement that was made by the fish. Not so, they say:"
Darwin's grandson discovered a mechanism for mixing similar in principle to the idea of drafting in aerodynamics," Dabiri explains. "In this mechanism, an individual organism literally drags the surrounding water with it as it goes."

Using this idea as their basis, Dabiri and Katija did some mathematical simulations of what might happen if you had many small animals all moving at more or less the same time, in the same direction. After all, each day, billions of tiny krill and copepods migrate hundreds of meters from the depths of the ocean toward the surface. Darwin's mechanism would suggest that they drag some of the colder, heavier bottom water up with them toward the warmer, lighter water at the top. This would create instability, and eventually, the water would flip, mixing itself as it went.
This has tremendous implications for evolutionary development. The movement of ocean currents has a large effect on continental temperatures which, in turn, has a large effect on the kinds of vegetation that grow and the kinds of fauna that live there. For example, it is likely that the expansion of the Mediterranean during the Miocene led to cooler temperatures in North Africa, specifically the Afar triangle. This led to reduction in forests and an increase in savannas. A group of late Miocene apes began to exploit the forest fringe area and established their own niche—these became the early hominids. I will be curious to see how this research pans out.


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Wednesday, July 29, 2009

Resources: Evolution at the AAAS

The American Association for the Advancement of Science, the group that prints Science Magazine, has a page on evolution resources here. There are many different resources, including videos and online articles. There are resources for reporters and kids as well as archives of news releases. It seems to be updated weekly since some of the information is out-of-date as of today. The news page is updated monthly. From this site, you can get the Evolution Dialogues, a guide to understanding the concepts of evolution and the age of the earth. The book can be ordered here, although there is a discrepancy concerning the price depending on where you are on the site.

Resources: Evolution at the National Academies

The National Academies has a web site devoted to evolution resources. The site has been redesigned to take into account the 200th anniversary of Charles Darwin's birth and 150th of the printing of On the Origins of Species. The site is split into a number of different areas including those for educators, for business, legal issues, science and religion and so on. The site is well-organized and focuses on the National Academies Press offerings, one of which is free with registration, Science, Evolution and Creationism. This is a must-read, as it explains in clear language why evolution is supported by the evidence and why it need not conflict with religion. Have a look!

Tuesday, July 28, 2009

The GOP Conspiracy Problem

Politico writes about "The GOP Headache" that the party currently has. In this case it is the conspiracy theorists (badly chosen word there) that believe, in the complete absence of evidence, that Barack Obama was not born in the United States, and, therefore, is not qualified to be POTUS. As Lisa Lerer and Daniel Libit write:

As GOP Rep. Mike Castle learned the hard way back home in Delaware this month, there’s no easy way to deal with the small but vocal crowd of right-wing activists who refuse to believe that President Barack Obama was born in the United States.

At a town hall meeting in Georgetown, a woman demanded to know why Castle and his colleagues were “ignoring” questions about Obama’s birth certificate — questions that have been put to rest repeatedly by state officials in Hawaii, where the birth certificate and all other credible evidence show that Obama was born in Honolulu on Aug. 4, 1961.

When Castle countered that Obama is, in fact, “a citizen of the United States,” the crowd erupted in boos, the woman seized control of the gathering and led a recitation of the Pledge of Allegiance. The video went viral; by Sunday, it had been viewed on YouTube more than half a million times.


Between the Nirthers and the creationist/ID crowd, likely voters who voted democrat are largely going to continue doing just that, reasoning that the GOP has gone off the deep end. Every creationist/ID bill that is drafted is done so by a Republican. Every time a school board considers watering down evolution, it is always the Republican faction that does so. Until the GOP officially divests itself of the creationists and the nirthers, it will continue to be seen as the backward party that promotes ignorance instead of education and conspiracy instead of common sense.
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Monday, July 27, 2009

Of Dinosaurs and Human Rights

Walking with Dinosaurs, an animatronic show aired at the Rexall Place in Edmonton over the weekend, showing kids in vivid 3-D what life with dinosaurs would have been like. Paula Simons in the Edmonton Journal has a write-up. She writes:

What is it about dinosaurs we find so fascinating? What enthralls toddlers and paleontologists alike, what keeps us reading dinosaur books, watching dinosaur movies, packing arenas to walk with dinosaurs?

It starts, I think, with their sheer size, their massive scope and scale. Millions of years after they exited the world stage, they still fill us with a mix of terror and sheer wonder. We never shared this planet with them. But how easy to imagine them chasing us down and gobbling us up.

Yet at the same time, our fear is mixed with affection and fascination. How else to explain Barney, or Dino from The Flintstones, or Little Foot from The Land Before Time or Harry and his Bucketful of Dinosaurs? Children love the idea of dinosaurs they can tame, friendly guardians big and strong enough to protect them from the anxieties of their world. It helps, of course, that so many dinos have such deliciously wacky body shapes. Those spikes, those plates, those armoured tails, those long, long necks! They were born to be cartoons.


How timely is this show? She continues:
In a province where polls say only 37 per cent of us believe in evolution, it's a bold artistic statement.

How crazy, how desperately sad, that we need a touring arena show to teach our kids what our public school system won't--or can't.

Any time I write about evolution, I hear from frustrated science teachers and biology profs who tell me they must censor themselves when they discuss evolution, to avoid hurt feelings and moral indignation.

Bill 44, which just amended Alberta's human rights legislation to give parents a legal right to advance written notice whenever religious issues are addressed in the classroom, will only make that chill worse. Now teachers who dare to discuss Darwin's "radical" 150-year-old truths must worry about possible human rights complaints from parents who see evolution as an assault on their religious beliefs.

The day Bill 44 was introduced, Ed Stelmach specifically said the new law would allow parents to pull their kids from classes on evolution. His government later backed away from those words, a tough task, since the premier made the statement in a room full of reporters with tape recorders and TV cameras -- a news conference leaves more fossil remains than a herd of brachiosauruses.

Like so many bills in the U.S., it is produced by legislators who know nothing of the fossil record and nothing of biology. It is depressing that flat-earth Christianity has seeped into Canada. There is a slightly more chilling aspect to this story, here, though that is indigenous to Canada: the Human Rights Commissions. Recently, Mark Steyn, a Canadian who writes for Maclean's, a Canadian equivalent to The Atlantic Monthly, as well as National Review was charged by the HRC for "hate speech" for a piece he wrote on Islam. Steyn is less than enthusiastic about Canada's complete embrace of the religion and he said so. The NR editorial can be found here. Fortunately, Steyn was cleared by the commission, but it reminded everyone involved how tenuous free speech actually is.

Should parents have the right to pull their kids from evolution classes? Absolutely. They should also have the right to let their kids fail the state exams when questions about evolution come up, as they should. Is it possible, though, that some parents might decide that to subject any kids to evolution might constitute a "human rights" violation? Were such to occur, I have no doubt how state legislators would respond.

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More Praise for Francis Collins

Gary Stern of LoHud (Lower Hudson Valley) has an article on Francis Collins that reflects on the choice that Obama made (likely the only one I have agreed with, so far) to have him head up the NIH. He writes:

Collins is all scientist. He is the former head of the Human Genome Project, which only identified the nearly 25,000 genes in human DNA and mapped out a genetic blueprint for humankind.

He is a firm believer that the universe began with the Big Bang 14 billion years ago, that evolution explains the development of life, that the Book of Genesis is poetry and not history, and that the Bible-based ideas behind "creationism" and "intelligent design" are neither scientific nor intelligent.

But science is not enough for Collins. Well, maybe it's more accurate to say that his knowledge of science - of intricate codes and formulas that work for no apparent reason - inspires him to believe things that can't be proven by the scientific method.

"The elegance behind life's complexity is indeed reason for awe, and for belief in God - but not in the simple, straightforward way that many found so compelling before Darwin came along," he wrote in his 2006 book, "The Language of God."

As others have, Stern notes that Collins had a revelation reading Mere Christianity by C.S. Lewis (how many people has that book influenced?) and allows Collins to explain himself:
For instance: "The Big Bang cries out for a divine explanation. It forces the conclusion that nature had a defined beginning. I cannot see how nature could have created itself. Only a supernatural force that is outside of space and time could have done that."
I find myself torn by that position. On one hand, I agree with it because it is also what I believe: that God created the heavens and the earth. And yet, it also falls under the heading of "belief from personal incredulity." Now, since it is not being posited as a scientific explanation for anything, the sting is removed quite a bit. Nonetheless, it is still the position that we, as scientists and (for those of us that are) theistic evolutionists, find ourselves. We believe in God and accept his Lordship over the universe. But we do this as an act of faith, understanding that science is not equipped to address those issues. Perhaps Collins understands this better than most.
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Friday, July 24, 2009

Human Evolution and the Jews

AllBusiness has an article by Patrick Tucker called How Evolution Is Evolving: Two scientists look at how the Jews got their smarts, which is a review of a relatively new book by Gregory Cochran and Henry Harpending, called The 10,000 Year Explosion: How Civilization Accelerated Human Evolution. The book dispels the myth that evolution has come to a standstill now that humans have covered the face of the planet. Tucker writes:

Cochran and Harpending single out the Ashkenazi Jews as a textbook example of how cultural decisions from just a few hundred years ago (a nanosecond in the conventional view of evolution) have already resulted in new genetic advantages. Prior to the Middle Ages, Ashkenazi Jews lived in the middle of an important cultural route, linking Europe to key parts of Asia. The Jews were the recipients of tremendous genetic variety as ancient people crossed through their territory, settled down, married, or just mated.

As increasing numbers of Jews moved into Europe during the Middle Ages, cultural rules against marrying outside the group, coupled with external social pressures, resulted in a relatively closed genetic circle. The more useful chromosomal traits picked up in the Levant rose to the top as genetic of dilution was contained. More importantly, the difficult conditions in Europe ensured a strong biological imperative to adapt and survive.

Indeed, while most Europeans experienced the Middle Ages as a clear improvement over the preceding dark ages, European Jews were roundly persecuted and, by and large, were locked out of land-ownership. They developed a set of shared survival tactics that happened to be ideally suited for the changes sweeping the continent. Without the legal ability to own large tracts of land, most were relegated to towns and hamlets. This gave them a head start on urban life. The primary occupations available to the Jews who settled in these nascent urban centers were service trades requiring literacy and arithmetic skills. Abstract intelligence and reasoning skills were valued more highly within the group than was the ability to wield an ax or pull a cart. Over the course of multiple generations, a cultural emphasis on developing quantitative intelligence rather than physical strength accentuated one particular genetic trait at the expense of others. The chosen trait in question was intelligence.

Hence the title of the article. The authors go on to suggest that these circumstances led to real genetic changes in the genome of the Ashkenazi Jews that benefited them in ways that are evident today:

The authors go on to show that people of European Jewish descent, regardless of family background, perform better than average on IQ tests. They are disproportionately well represented among lists of major math and science award winners.

Although they account for less than 3% of the U.S. population, they comprise 27% of U.S. Nobel Prize winners over the past two generations, account for about a fifth of CEOs, and about 22% of Ivy League students.

Although this certainly falls under the category of microevolution, it still shows how changes in environments, both topographical and cultural can shape the genetic make-up of a population. This research derives in part from the vast population genetic research that Harpending has been doing for the last thirty years.


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Another Role for the Bill of the Toucan

The bill of the Toucan has always been one of its signatures and naturalists have puzzled over it for several centuries. According to a story by Hadley Leggett in Wired:
Scientists have been intrigued by the oversize toucan bill for centuries. In 1780, French naturalist Georges-Louis Buffon called it a “grossly monstrous” appendage, and Darwin puzzled over its potential role in sexual selection in The Descent of Man. Toucans have the biggest beak-to-body ratio of any bird on the planet, but no one has figured out why the animal evolved a bill one-third the length of its body.
Enter modern science:
Now, using infrared thermography, a type of temperature-sensing video originally developed by the U.S. military, scientists have tracked the pattern of heat distribution across the toucan’s body under changing outside temperatures. When the bird got too hot, it released heat by sending blood to its highly vascular but uninsulated beak. In cooler weather, the toucan constricted blood vessels in its beak to conserve heat and stay warm.
This would be a great selective advantage for the bird and allow it to colonize areas that other tropically-based birds would not be able to. This kind of science likely doesn't fall under the "Eureka" kind of discovery, as much as the "That's funny..." kind, to paraphrase Isaac Asimov. Neat.


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