I WON the game!


Weird things have been happening lately. In my entire life I have never won any kind of contest, lottery, or sweepstakes. Indeed, as I pointed out here, the only game that I have consistently played is one that I have consistently lost simply by remembering that I'm playing it (see here for more).

But now, this has happened:
REPORT ON THE MAGAZINE OF FANTASY AND SCIENCE FICTION'S 1980 30TH ANNIVERSARY CONTEST:

AS GREAT AS it is for contemplating the future, science fiction is also valuable for reminding us that we are living in someone else's future.

This little truism came to mind when our last publisher, Ed Ferman, sent word that a winner from our 1980 contest has been decided a few months early. (If the contest doesn't sound familiar to you longtime readers, don't go searching through your back issues—the contest was conducted by mail as part of a subscription drive.)

In 1980, F&SF sponsored a 30th Anniversary Contest called "Win $2,010 in the year 2010." It asked readers to choose one science fiction concept which will have been realized by the year 2010 and which will have had the most significant impact (good or bad) on your life.

As promised, the approximately 2,700 entries were held securely and recently opened in order to select a winner. I read through all of them over several days, and here are some comments:

Only a tiny minority chose something bad, typically, "thermonuclear war; I'll be dead."

The vast majority chose concepts that seemed—in hindsight at least—wildly optimistic. Most frequent entries of this sort included:
- World government, world peace
- Colonies or factories in space
- Robots in the home
- Tourist travel in space

Most frequent of all: medical advances that would extend life span to 200 years or more.

So many entries projected a sense of confidence and hope that it was somewhat distressing to see how badly we fell short in realizing these predictions.

More realistic predictions occurred in two areas: genetic research and alternative sources of energy. But even here, the only concept we came across that has come close to being realized is the electric car.

The winner was chosen from a fairly large group who saw that computer technology and communication would have the greatest impact. In 1980 personal computers had only been available for a few years (Apple was founded in 1976), and wide use of the Internet was more than a decade in the future.

It was hard to select a winner from this group. What tipped Allen MacNeill's entry into the winner's circle was his prediction of hand-held computers, though he admits that he never thought they would be the size of a pack of cigarettes.

—Ed Ferman, former publisher, The Magazine of Fantasy and Science Fiction

On hearing the news, the contest winner, Allen MacNeill, sent a note that's worth reprinting in its entirety:
Greetings, Ed:

Please forgive my skepticism, but I receive about a hundred "phishing" invitations a day and so am very leery of the kind of notification contained in your email. However, it is indeed the case that I was a very loyal subscriber to F&SF from the 1970s through the late 1980s. As a senior lecturer in biology at Cornell, I eventually let my subscription lapse, mostly because I no longer had the luxury of spending time reading a lot of science fiction (more's the pity). I still glance through a copy now and then (usually in the library) and find it to still have the best short fiction in the genre.

Anyway, yes I did indeed enter the contest, and remember the premise well. I believe that I entered several times, with several predictions. I came up with the one about "home computer terminals with interactive access to other home, business and academic terminals, and including hand-held terminals" mostly because I had been using the PLATO terminals in Uris Hall at Cornell and wished very, very much that I could have one of my own (and especially one that I could carry around with me). Of course, the fact that you are reading this email on precisely the kind of "home computer terminal" that I originally predicted would come about is evidence that this prediction was pretty accurate.

However, I never would have predicted either spam or viruses/worms (although David Gerrold did in When HARLIE was One, which first appeared in Galaxy magazine, another sf mag I read with devotion in those days). I have owned at least one "home computer terminal" since 1982 (it was a Commodore 64), only two years after I made the prediction for your contest. My first real desktop (i.e. the fulfillment of the prediction) was an Epson QX-10, which I bought in 1983 when I landed a contract to write an introductory biology textbook for Prentice-Hall. When it died suddenly in 1987 I bought a Mac Plus, and have stuck with Macs ever since. Right now I have three 24" 2.4 GHz Intel Core 2 Duo iMacs, running simultaneously as WIntel machines using Parallels, one at home and one in my office at Cornell, plus a 15" MacBook G-4 that is now starting to show its age (it's almost five years old, and so a virtual antique).

If pressed today, I would say that thirty years from now it is most likely that we will be using some version of a "cloudbook", for which most of the processing and hard memory/data storage will be located somewhere else. This will, of course, depend on the Moore's Law-enhanced capabilities of the descendants of today's cell phones, which I suspect will be incorporated into our clothing, with something like a virtually invisible BlueTooth earbud/jaw mike interface. I don't think we will have implants, however, as they would need to be surgically replaced too often as technology changes—fun as it was at the time, I certainly would not have wanted to have the equivalent of my old C-64 implanted in me!

Anyway, my very brief bio is this: In 1980 when I entered the contest I had just recently finished graduate school and begun teaching introductory biology at Cornell. I have been doing so ever since, with a brief sabbatical leave as Chief Academic Officer for a Web 1.0 startup in 1999-2000. I am about to be taped for a series of online lectures on evolution for Cornell's CyberTower "study rooms" and am currently writing several books and maintaining four active blogs. I couldn't do any of this without my trusty home computer terminals with interactive access to other home, business and academic terminals, and including hand-held terminals, and indeed cannot imagine what life today would be without them. Very different, and much less interesting in many ways.

By the way, I wish that back in 1980 you had bought $2,010 worth of Apple stock (or any kind of stock, for that matter) and held on to it for the winner of your contest. Now that I think of it, could I have my grand prize winnings in 1980 dollars? ;-)

My sincerest thanks for a terrific magazine, a terrific contest, and for making my day! Please let me know where the announcement of the contest and the fact that I am the grand prize winner will appear, so I can blog it!

Still in Ithaca/Utopia and still crazy after all these years, I remain…
As always.
—Allen MacNeill

So, congratulations to Allen MacNeill, and for anyone who is reading this editorial in the year 2040, I hope you're making the most of our future.
—Gordon Van Gelder, current publisher, The Magazine of Fantasy and Science Fiction


And, it gets weirder yet:

As of yesterday (Monday 7 December 2009), The Evolution List is currently #63 in the Top 100 Science Blogs list at Wikio.com. Furthermore, it is currently #12 among science blogs that regularly cover evolutionary biology:

1. Pharyngula
2. The Panda's Thumb
3. Greg Laden's Blog
4. Gene Expression
5. A Blog Around the Clock
6. Thoughts from Kansas
7. EvolutionBlog
8. Mike the Mad Biologist
9. Laelaps
10. Aetiology
11. The Evolving Mind
12. The Evolution List

What's next, I wonder?

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As always, comments, criticisms, and suggestions are warmly welcomed!

--Allen

The Searchers


AUTHORS: William A. Dembski and Robert J. Marks II

SOURCE: Proceedings of the 2009 IEEE International Conference on Systems, Man, and Cybernetics. San Antonio, TX, USA – October 2009, pp. 2647-2652

COMMENTARY: Allen MacNeill

First, congratulations to Drs. Dembski & Marks! Publication is the life blood of all career academics and the living heart of the intellectual process. It takes courage and hard work (and a little bit of luck) to get your original work published, and more of the same to weather the criticism that inevitably ensues. But, just as one cannot have a fencing match without an opponent, real progress in any intellectual endeavor cannot come from consensus, but only from the clash of ideas and evidence.

And so, to specifics:

I have no quibble with most of the mathematical analysis presented. Indeed, given the assumptions upon which the authors' Conservation of Information (COI) theory is based (with which I do not necessarily agree, but which are clearly presented in their paper), the analysis presented is apparently not completely outside the domain of No Free Lunch (NFL) theorems in general.

However, the same cannot be said for the application of these ideas to biological evolution. To be specific, consider the following quote [Dembski & Marks (2009) pg. 2651, lines 2-5]:
"From the perspective of COI, these limited number of endpoints on which evolution converges constitute intrinsic targets, crafted in part by initial conditions and the environment." [emphasis added]

This is indeed the crux of the issue vis-a-vis biological evolution. While it is clearly the case that Simon Conway-Morris asserts that there is an apparently limited number of biological "endpoints", it is neither the case that Morris' viewpoint represents the core of evolutionary theory, nor that his point is relevant to the analysis of COI presented in Dr. Dembski and Marks' paper.

To be specific, the highlighted qualifier from the quote above – crafted in part by initial conditions and the environment – is precisely the issue under debate between evolutionary biologists and supports of intelligent design (ID).

Taken at face value, this qualifying simply phrase means that, given specific starting conditions and a specific time-varying environmental context, the various mechanisms of evolution (e.g. mutation, natural selection, genetic drift, inbreeding, etc.) tend to converge on a relatively limited set of genotypic and phenotypic "endstates" (i.e. what could be loosely referred to as "evolutionary adaptations").

This is simply another way of defining evolutionary convergence, and in no way constitutes evidence for intrinsic evolutionary teleology. On the contrary, it simply provides support for the hypothesis that, given similar conditions, similar outcomes result.

Furthermore, it assumes that virtually all characteristics of living organisms are adaptations (that is, genotypic/phenotypic characteristics that fulfill some necessary function in the lives of organisms). However, this is manifestly not the case, nor is it an absolutely necessary component of current evolutionary theory. On the contrary, many (perhaps the majority) of the characteristics of living organisms are not adaptive. This is certainly the case at the level of the genome, as evidenced by the neutral and nearly neutraltheories of molecular evolution.

Finally, Morris' (and, by extension, Dembski and Marks') position completely omits any role for historical contingency, which both the fossil and genomic record indicate are of extraordinary importance in macroevolution. As Dembski and Marks state, the "endpoints" (perhaps it would be more precise to refer to them as "way stations") of macroevolution depend fundamentally on initial conditions and the environment. But this is not fundamentally different from Darwin's position in the Origin of Species:
"The complex and little known laws governing variation are the same, as far as we can see, with the laws which have governed the production of so-called specific forms. In both cases physical conditions seem to have produced but little direct effect; yet when varieties enter any zone, they occasionally assume some of the characters of the species proper to that zone." [Darwin, C. (1859) Origin of Species, pg. 472, emphasis added]

Moreover, Dembski and Marks' analysis completely ignores the appearance (or non-appearance) of new genotypic and phenotypic variations, and on the accidental disappearance of such characteristics (via extinction), without regard to the adaptive value of such characteristics, or the lack thereof.

In other words, Dembski and Marks' analysis, while interesting from the standpoint of what could be called "abstract" search algorithms, completely fails to address the central issues of evolutionary biology: the source of evolutionary novelty (i.e. the "engines of variation"), the effects of changing environmental conditions on the actual forms and functions of living organisms, and the fundamental importance of historical contingency in the ongoing evolution of genotypes and phenotypes.

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As always, comments, criticisms, and suggestions are warmly welcomed!

--Allen

A New Species of Finch in the Galapagos: So What?


Since the first reports of the origin of a new species of finch on the island of Daphne Major in the Galapagos archipelago appeared, there has been a flood of questions about just what exactly it was that Peter and Rosemary Grant observed, and how their observations relate to the larger question of macroevolution. As many evolutionary biologists (including me) anticipated, creationists and intelligent design ("ID") supporters have moved the goalposts, arguing that they have always accepted that speciation occurs, but that it does not necessarily mean anything for macroevolution, especially if one defines "macroevolution" as the origin of higher taxa (i.e. taxonomic categories above the level of species). So, what did the Grants observe, and how are their observations related to the larger question of the origin of higher taxa (i.e. macroevolution)?

The answer is that this long-term research project has provided direct evidence for the initial stages of macroevolution in the field. To be precise, what is at issue in the research reported by the Grants is what is known as “secondary contact”. This is what happens after a sub-population has become reproductively isolated from the population from which it was derived. According to Theodosius Dobzhansky and Ernst Mayr (two of the founders of the “modern evolutionary synthesis”), speciation is the result of genetic isolation resulting from geographic isolation: the members of two geographically separated populations of organisms no longer interbreed, and therefore genetic differences between the two populations accumulate over time.

This process, commonly known as allopatric speciation, can be considered to consist of six discrete, successive stages:

1) Vicariance: A subpopulation (in this case, a couple of finches) becomes geographically isolated (on Isla Daphne Major) from its former panmictic conspecifics (i.e. the species Geospiza fortis on Isla Santa Cruz, a neighboring island);

2) Divergence: The genomes of the members of the vicariant subpopulation diverge from the genomes of the members of the panmictic source population as the result of various genetic mechanisms (for a list of such mechanisms, click here);

3) Reproductive Isolation: The reproductive anatomy, physiology, and behavior of the members of the vicariant subpopulation diverge from the reproductive anatomy, physiology, and behavior of the members of the original source population, resulting in reproductive isolation and (eventually...at least sometimes) reproductive incompatibility;

4) Secondary Contact: Successful hybridization between members of the diverging sub-population and the original source population decreases in frequency as the result of pre-zygotic and post-zygotic isolating mechanisms (for more, click here);

5) Reinforcement: Hybrids continue to decrease in frequency as non-hybrids increase in frequency as the result of microevolutionary mechanisms (i.e. mutation,natural selection, gene flow, genetic drift, and inbreeding depression), resulting in reinforcement of reproductive isolation and species boundaries; and

6) Maintenance: Species incompatibility is continuously reinforced via pre-zygotic and post-zygotic isolating mechanisms, resulting in continued genotypic and phenotypic divergence.

This is why Alfred Russell Wallace entitled his paper (which he mailed to Darwin in April 1858), “On the Tendency for Varieties to Depart Indefinitely from the Original Type”.

Note that none of these stages is absolutely defined; rather, they integrade in what Darwin characterized as an “insensible series”. Also note that stages 4 through 6 can be condensed into one stage (i.e. “reinforcement”), in which reproductive incompatibility increases steadily over time. Finally, some evolutionary biologists (most notably C. H. Waddington, Mary Jane West-Eberhard, Eva Jablonka and Marion Lamb) have proposed that stages 2 and 3 probably happen in reverse order (a process known as genetic assimilation).

This is the theoretical model; what actual empirical studies have shown is that diverging phylogenetic lines frequently become reintegrated, separating and then re-integrating more than once. Sometimes they become sufficiently reinforced that they remain separate and diverge continuously, and sometimes they “collapse” back into a single, panmictic “species”.

The importance of all of this to the theory of macroevolution is that divergence is divergence: phylogenetic divergence via reproductive isolation is macroevolution. Speciation is simply the first stage in the origin of all higher taxa.

Therefore, what is ultimately at issue between evolutionary biologists and creationists (including most ID supporters) is not speciation per se nor the mechanisms by which it occurs or is reinforced, but rather whether there are “natural” limits to the degree of divergence that can take place as a result of the mechanisms that comprise the “engines of variation”.

Despite much posturing on both sides, this is not a question that can be answered via pure theoretical (i.e. mathematical) speculation. However compelling a theoretical model may appear, it must be tested empirically to see if it conforms to the evidence from nature. This is what evolutionary biologists do all the time, and what ID theorists seem either unable or unwilling to do. Until this situation changes (if it ever does), no reputable empirical scientist anywhere will ever take ID seriously.

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As always, comments, criticisms, and suggestions are warmly welcomed!

--Allen

The Longest Running Failed Prediction in Creationism


AUTHOR: G.R. Morton

SOURCE: Answers in Science

COMMENTARY: Allen MacNeill

First, today is the 150th anniversary of the original publication of Charles Darwin's Origin of Species. So many people have written about this event that it would be superfluous for me to write about it here. However, some of what has been written about the Origin lately, mostly by creationists and supporters of "intelligent design", is that Darwin's theory of evolution by natural selection is "crumbling" and will soon be "dead".

Admittedly, I have written recently that the "modern evolutionary synthesis" is dead (see here for more), but in doing so I have taken pains to point out that the theory of evolution itself is most assuredly not dead. On the contrary, it is very much alive. Indeed, it has never been more vigorous than it is today.

But that's not what the creationists are saying. What they're saying (or trying to say) is that the whole concept of evolution itself is dead: the Earth and everything on it was created a relatively short time ago, and even if life on Earth has changed (a little), all of that change has been guided by the deity of the Abrahamic religions (Judaism, Christianity, Islam, Mormonism, etc.) Indeed, just this morning a new podcast was launched at the website of the Discovery Institute, in which neo-Paleyist and ID creationist John West asserts once again that "Darwinism is dead".

Is this news? And is it new? How long have creationists been predicting the demise of Darwin's theory of evolution? Apparently, they've been doing so since a few decades before Darwin published it. G. R. Morton has compiled a short list of quote from creationists predicting the impending overthrow of the theory of evolution (you can read it here). He introduces his anthology of science denialism with this:

In recent reading of [Dr. William] Dembski and other ID proponents I saw them make a claim which has been made for over 40 years. This claim is one that the young-earthers have been making. The claim is that evolution (or major supporting concepts for it) is increasingly being abandoned by scientists, or is about to fall. This claim has many forms and has been made for over 162 years. This is a compilation of the claims over time. The purpose of this compilation is two-fold. First, it is to show that the claim has been made for a long, long time. Secondly, it is to show that entire careers have passed without seeing any of this movement away from evolution. Third, it is to show that the creationists are merely making these statements for the purpose of keeping hope alive that they are making progress towards their goal. In point of fact, no such progress is being made as anyone who has watched this area for the last 40 years can testify. The claim is false as history and present-day events show, yet that doesn't stop anyone wanting to sell books from making that claim.

Morton's quotations from creationists begins with a quote dating to 1825, 34 years before Darwin published the Origin of Species. Apparently, what many historians have asserted was true: that the idea of evolution was "in the air" in the mid-19th century, and that Darwin simply codified and provided evidence for an idea that was already becoming generally well-known and at least partially accepted. The fact that Alfred Russell Wallace came up with the same mechanism that Darwin did for descent with modification — natural selection — is further evidence for the idea that evolution was "in the air" at the time.

It still is, and even moreso. Not only has the theory of evolution not "crumbled", it is currently undergoing its most rapid expansion since 1859. Darwin's original theory was limited strictly to biological evolution, but now his theory is being extended into astrophysics, geology, economics, psychology, sociology, and even literature and art history. It is this tremendous success that upsets the opponents of Darwin's theory, and that impels them (in the face of overwhelming evidence to the contrary) that the most widely accepted, most generally applicable, and most analytically powerful theory in all of science is on its way out.

In other words (and true to their creationist roots), they stare reality in the face and deny it.

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As always, comments, criticisms, and suggestions are warmly welcomed!

--Allen

Comfortable Creationists Wimp Out at Cornell


Many people have recently heard about how creationist and televangelist Ray Comfort has been planning to distribute 170,000 copies of Charles Darwin's Origin of Species at the 100 top colleges and universities in America.

Well, the appointed day (19 November) for Ray's distribution of the Origin came and went, but apparently no creationists showed up at Cornell to pass out Ray's "abridged" copy of the Origin of Species with Ray's laughably mendacious introduction. I really wanted to get a copy, eagerly pressed into my grasp by the hot little hands of a freshly scrubbed creationist, but after checking every likely location — from Ho Plaza in front of the Straight (where there were a few empty folding tables, sitting forlornly in the rain) to the plaza between Olin and Uris libraries (where a few damp smokers contemplated "The Song of the Vowels") to Trillium (where Cornell's elite meet to eat) to Mann Library (the second largest agriculture and biology library in the world...where is the first, exactly?) to Appell Commons (where you can work up a sweat before downing your stir fry)...nada, nobody, zip, just grey sky and freezing rain. And so my quest for another artifact from the culture wars went unsatisfied...

Apparently, Ray got worried that people like me would make things "unComfortable" for his minions, so he secretly ordered them to go out a day early. But, this is the Age of Twitter, and so a lot of Godless Evilutionists were out in force on Wednesday...but, no Comfortable creationists then either. Looks like I picked up that bunch of bananas for nothing — *sigh*

By the way, Ray Comfort has apparently been making a career out of lying lately, asserting that his version of the Origin would be passed out at Cornell yesterday, and that his bastardized version would be available in its entirety. Although I didn't get my copy, I have been informed by people at other academic institutions who did that, on the contrary, he's apparently cut out precisely those chapters that have proven most inconvenient for creationists in the past. And, he's added a fifty-page "introduction" that's filled with laughably inaccurate so-called "arguments" against the content of Darwin's masterpiece.

Furthermore, his apparently false claim that he was printing 170,000 copies of his version of the Origin was apparently intended to push his version to the top of Amazon.com's search results for the Origin of Species, where members of the uninformed public who were interested in reading Darwin's masterpiece during this bicentennial year (it's the 200th anniversary of Darwin's birth and the 150th anniversary of the first publication of the Origin of Species) would innocently buy his bastardized version with his mendacious introduction. A clever public relations gambit — gaming Amazon.com's popularity algorithm — but I guess he forgot about the reviewer's comments at Amazon, where his lying and propaganda techniques and public relations tricks have been exposed by people more interested in the truth than making money by shilling for Jesus (who would have been horrified by Ray's tactics, and probably by his theology as well).

So, why did Ray's minions wimp out at Cornell? Maybe because Cornell is well-known for being the Ivy League university most dedicated to the principles of modern science, including evolutionary biology — we've got the best department of ecology and evolutionary biology in the world, and Cornellians (including our presidents) have been well-known for speaking out against bad science since the beginning.

Or maybe because Ray's followers were "discomfited" by our ever-present November drizzle...

...whatever.

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As always, comments, criticisms, and suggestions are warmly welcomed!

--Allen

The Modern Synthesis is Dead - Long Live the Evolving Synthesis!


It has been almost exactly a century and a half since Darwin's Origin of Species was first published, and half a century since the conference at the University of Chicago where the "triumph" of the "modern evolutionary synthesis" was celebrated. So, isn't it a little odd that some well-respected scientists and historians of science are proclaiming in this celebratory year that the modern evolutionary synthesis is dead?

For example, Eugene Koonin, senior investigator at the National Center for Biotechnology Information, National Library of Medicine, and National Institutes of Health in Bethesda, Maryland, has published two essays on the current status of the "modern evolutionary synthesis":
The Origin at 150: Is a new evolutionary synthesis in sight?
Trends in Genetics, 25(11), November 2009, pp. 473-475.

Abstract: The 200th anniversary of Charles Darwin and the 150th jubilee of the On the Origin of Species could prompt a new look at evolutionary biology. The 1959 Origin centennial was marked by the consolidation of the modern synthesis. The edifice of the modern synthesis has crumbled, apparently, beyond repair. The hallmark of the Darwinian discourse of 2009 is the plurality of evolutionary processes and patterns. Nevertheless, glimpses of a new synthesis might be discernible in emerging universals of evolution.

and
Darwinian evolution in the light of genomics.
Nucleic Acids Research, 37(4), 2009, pp. 1011-1034.

ABSTRACT: Comparative genomics and systems biology offer unprecedented opportunities for testing central tenets of evolutionary biology formulated by Darwin in the Origin of Species in 1859 and expanded in the Modern Synthesis 100 years later. Evolutionary-genomic studies show that natural selection is only one of the forces that shape genome evolution and is not quantitatively dominant, whereas non-adaptive processes are much more prominent than previously suspected. Major contributions of horizontal gene transfer and diverse selfish genetic elements to genome evolution undermine the Tree of Life concept. An adequate depiction of evolution requires the more complex concept of a network or 'forest' of life. There is no consistent tendency of evolution towards increased genomic complexity, and when complexity increases, this appears to be a nonadaptive consequence of evolution under weak purifying selection rather than an adaptation. Several universals of genome evolution were discovered including the invariant distributions of evolutionary rates among orthologous genes from diverse genomes and of paralogous gene family sizes, and the negative correlation between gene expression level and sequence evolution rate. Simple, non-adaptive models of evolution explain some of these universals, suggesting that a new synthesis of evolutionary biology might become feasible in a not so remote future.

A big deal, right? Well, not really. Will Provine and I have been saying that “the modern evolutionary synthesis is dead” for years. Indeed, Will Provine coined the phrase “the hardening of the synthesis” to describe the narrowing of focus in evolutionary theory during the first half of the 20th century to concepts entirely reducible to mathematical models, especially theoretical population genetics.

Ironically, Dr. John Sanford and Dr. William Dembski (among others in the ID camp) have not moved beyond this narrow focus on theoretical population genetics, and so have apparently missed the fact that evolutionary biology has evolved far beyond the narrow theoretical focus of the mid-20th century. Some ID supporters have also suggested that Dr. Koonin might be taking a “big career risk” in stating the obvious. I don't think so. On the contrary, what Dr. Koonin has pointed out is that evolutionary biology today is broader, more generally applicable, and less narrowly focused than at any time since the publication of the Origin of Species 150 years ago. Being an evolutionary biologist today is like being a physicist in 1905 — a whole new world of theoretical and practical empirical research is opening up, with new discoveries being made every day.

As just one example, Kyoto-prize-winning evolutionary biologists Peter and Rosemary Grant have reported on something that Darwin could only speculate about: the systematic empirical documentation of the “origin” of a new species (reported here yesterday). Creationists have of course moved the goalposts, arguing that they accepted all along that new species could arise from existing ones, it’s just microevolution, which of course everyone accepts. This, despite the fact that speciation has always been considered to be the first (and perhaps most important) stage in macroevolution, and that less than two decades ago creationists were confidently stating that “true” speciation had not only never been observed, it couldn’t ever be observed because it can’t happen.

Now the leaders of the ID movement — people like Dr. Michael Behe and Dr. William Dembski — publicly state that they fully accept that descent with modification from common ancestors (i.e. evolution) has happened, that microevolution (i.e. natural selection, sexual selection, and genetic drift) are also fully supported by the evidence, and that the “real” focus of disagreement is over the “engines of variation” that produce the raw material upon which the “engines of evolution” operate. They’ve come a long way, but they’ve missed the parade by a couple of decades. So it goes…

I would say that Dr. Koonin's essays on where evolutionary biology is today are quite close to the the mark. The concept of natural selection as the foundation of evolutionary change has been largely superseded, mostly through the work of Motoo Kimura, Tomoko Ohta, and others, who have shown both theoretically and empirically that natural selection has little or no effect on the vast majority of the genomes of most living organisms.

However, ID supporters should find this sea change in evolutionary biology to be cold comfort. The overall effect of the advances in our understanding of how genomes and phenotypes change over time has had the same effect on evolutionary theory that the rise of quantum mechanics had on classical physics. Einstein famously asserted that “God does not play dice”, but a century of physics research has shown him to be more wrong about how the universe works at the quantum level than ever.

The same is true for the “evolving synthesis”. Rather than revert to a neo-Paleyan paradigm (as proposed by Behe, Dembski, and their supporters), evolutionary biology has gone in the opposite direction, the same direction that quantum mechanics has taken. According to the “modern synthesis” of the last century, the genome was “homeostatic”, “organized”, and “regulated” primarily by natural selection. Sure there were purely random processes also going on (such as genetic drift), but most evolutionary change was both adaptive and coherent over time.

Here's what Dr. Koonin writes (see above):
"There is no consistent tendency of evolution towards increased genomic complexity, and when complexity increases, this appears to be a nonadaptive consequence of evolution under weak purifying selection rather than an adaptation."

Kimura, Ohta, Jukes, and Crow dropped a monkey wrench into the "engine" at the heart of the modern synthesis — natural selection — and then Gould and Lewontin finished the job with their famous paper on “the spandrels of San Marco and the Panglossian paradigm”. The rise of evo-devo over the past two decades has laid the groundwork for a completely new and empirically testable theory of macroevolution, a theory that is currently facilitating exponential progress in our understanding of how major evolutionary transitions happen. And iconoclasts like Lynn Margulis, Eva Jablonka, Marian Lamb, Mary Jane West-Eberhard, and David Sloan Wilson are rapidly overturning our understanding of how evolutionary change happens at all levels, and how it is inherited.

So, as I have said many times before, when ID supporters set their sights on “neo-Darwinism” as a target for criticism, they set their sights on a model that has been all but abandoned. The carnival has moved on and ID supporters are fighting battles that evolutionary biologists left behind a half century and more ago.

And so, on this 150th anniversary of the publication of Darwin's Origin of Species, evolutionary biologists can raise a frosty glass and say


The modern synthesis is dead — long live the evolving synthesis!


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As always, comments, criticisms, and suggestions are warmly welcomed!

--Allen

The Darwinian Revolution To Be Shown at Cornell


There will be a free public showing of The Darwinian Revolution video series at 4 PM on Tuesday 24 November 2009 in the large classroom (room 3330) of the Tatkon Center in Balch Hall. This presentation will take place on the 150th anniversary of the publication of Charles Darwin's Origin of Species, and is part of Cornell's celebration of the Darwin Bicentennial. The host of the video series, Cornell evolutionary biologist Allen MacNeill, will be on hand at the presentation to discuss the videos and answer questions about evolutionary biology in general, and about The Darwinian Revolution video series in particular.

The Darwinian Revolution is a series of six videos addressing the content and history of the theory of evolution. Produced by Cornell's CyberTower program and hosted by evolutionary biologist Allen MacNeill, the six-part series includes an overview of evolutionary biology, a history of the concept of evolution in western civilization, a brief consideration of Lamarck's theory of evolution via the inheritance of acquired characteristics, a detailed look at Darwin's theory of evolution by natural selection, a brief exploration of Mendel's theory of particulate inheritance and its role in the origins of the "modern evolutionary synthesis", and a look forward at the future prospects for evolutionary biology. The series was videotaped at the Museum of the Earth in Ithaca, New York, and features interviews with museum director and paleontologist Warren Allman and Cornell historian of science William Provine.

This public showing of The Darwinian Revolution is free and open to the general public. It is cosponsored by Cornell's CyberTower program, in cooperation with the Museum of the Earth and Cornell's Tatkon Center as part of this year's celebration of the 200th anniversary of the birth of Charles Darwin and the 150th anniversary of the publication of Darwin's Origin of Species.

The Darwinian Revolution video series can also be viewed online here. For more information about the video series, go here.

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As always, comments, criticisms, and suggestions are warmly welcomed!

--Allen

A New Species of Finch may have Evolved in the Galapagos


AUTHOR: Daniel Cressey

SOURCE: Nature.com News

COMMENTARY: Allen MacNeill

As I have noted in several recent blogposts, Charles Darwin's Origin of Species was published 150 years ago this month. One of Darwin's crucial examples of descent with modification in the Origin was the evolutionary diversification of a group of finches now usually referred to as "Darwin's finches". In the Origin Darwin did not speculate as to how long this evolutionary diversification took place, except to suggest that it would require "the passage of long ages". However, in a private letter to one of his correspondents, Darwin suggested that it would take at least fifty years to see unambiguous effects of natural selection.

A recent publication in the Proceedings of the National Academy of Sciences lends empirical support to Darwin's suggestion. Peter and Rosemary Grant have been studying the finches of Daphne Major, a small island in the Galapagos archipelago since 1973. In PNAS, they have proposed that a population of finches on Daphne Major may be on the verge of becoming a new species of finch. Here's how their proposal was reported at Nature.com News:
"It was in 1981, that the Grants spotted an unusually heavy medium ground-finch (Geospiza fortis). At 29.7 grams, the male was more than 5 grams heavier than any they had seen on Daphne Major before. Genetic analysis showed that it probably came from the neighbouring island of Santa Cruz.

The Grants numbered the bird 5110 and followed it and all its known descendants over seven generations. Many of its descendants stuck out from the other G. fortis on Daphne Major: they had unusually shaped beaks and their songs differed from those of the other finches.

...

In the fourth generation, a severe drought hit the island and 5110's descendants were reduced to one male and one female — a brother and sister. From then on the immigrant lineage isolated itself, breeding with no other G. fortis on the island....

"No study of this sort has been done before, and it shows one way in which speciation can get started," say the Grants from Japan, where they are receiving the Kyoto Prize for basic science for their life work."

Several further points from the Grants' report are significant. Many evolutionary biologists (including Tijs Goldschmidt) have speculated that sexual selection may be a significant cause of evolutionary diversification, including the origin of new species as the result of female choice. It appears that sexual selection has played an important part in the differentiation of the incipient species of finch on Daphne Major:
"The fact that 5110's descendants haven't mixed could be because they differ from the natives. The Grants note that the descendants have a differently shaped beak from those native to Daphne Major. As finch beaks are vital in identifying potential mates, this could serve to keep them reproductively isolated.

5110's offspring also have the avian equivalent of a strange accent. These finches learn their songs from their father, and the Grants suggest that 5110 sang the songs from his birth home of Santa Cruz then modified his come-hither ballad by roughly copying the Daphne Major birds'. This imperfect copying, they suggest, has over time acted as a barrier to interbreeding.

Also, the Grants' research has illustrated an important point concerning Darwinian speciation. As Darwin pointed out in the Origin, the distinction between varieties, subspecies, and species are "entirely arbitrary", and ultimately depend on reproductive isolation:
"The Grant's aren't yet ready to call 5110's lineage a new species, a term fraught with difficulty for evolutionary biologists. "There is no non-arbitrary answer to the question of how many generations should elapse before we declare the reproductively isolated lineage to be a new species," they say. "For the present it is functioning as a [separate] species because its members are breeding only with each other."

The Grants think there is only a small chance that 5110's descendants will remain isolated long enough to speciate. If they do, the new species will have to be named: "When discussing these birds we call them 'big birds'," the Grants say. "That could be translated into Latin."

According to the biological species concept, since 5110's descendants are not interbreeding with the other finch species on Daphne Major, they should already be considered to be a separate species. If at some point in the future they do interbreed with the other species of finches, this would not violate their status as a distinct species, any more than the hybridization between blue-winged warblers (Vermivora pinus) and golden-winged warblers (Vermivora chrysoptera) indicates that these two species are not "genuine" biological species.

Finally, the observation that this incipient species of finch resulted from the consanquineous mating of a pair of full siblings lends support to my proposal that speciation can be facilitated by first degree inbreeding. Here's what I wrote about this proposal on Thanksgiving in 2006:
"Wouldn't [the genetic rearrangements usually accompany reproductive isolation] have to occur within at least two members- one male, one female- of the same population in order for it to have any chance of getting passed on? And therefore, wouldn't this make such genetic rearrangements difficult, if not impossible to pass on?"

To which I answered:

No. All that would need to happen to make this possible would be for two first-degree relatives carrying the genetic rearrangement to mate and have offspring. First degree relatives (i.e. parents and offspring or full siblings) can easily have the same chromosomal mutation (i.e. a fusion, fission, translocation, or inversion), as they would inherit it from a single parent. If they were to mate with each other (a not uncommon event among non-humans...and even among some humans), they would be able to produce fertile offspring carrying the same chromosomal mutation.

Yes, it is true that first degree mating carries with it the possibility of reinforcement of recessive lethal alleles. However, as many geneticists and evolutionary biologists have repeatedly pointed out, this is actually beneficial to the population within which such reinforcement happens, as the alleles are "purged" from the population as a result.

In other words, mating between first degree genetic relatives within a small, isolated population would have the effect of both removing deleterious alleles from the population and allowing chromosomal mutations to spread throughout the population, especially if such mutations were at all beneficial (although they would diffuse almost as well if they were selectively neutral, as would probably be the case given that no change in overall genetic information would have occurred).

Furthermore, the hypothesis that I have presented above squares very well with the currently prevailing theory of speciation: that of peripatric speciation, as first proposed by Ernst Mayr. According to Mayr's theory, speciation occurs most often in small, isolated populations on the periphery of large, panmictic populations. There is abundant natual history evidence that this is the case, especially in animals.

However, to my knowledge no one has yet proposed a mechanism explaining how peripatric speciation would come to be associated with the kinds of chromosomal changes that are commonly associated with reproductive isolation and speciation. My hypothesis – that first-degree inbreeding facilitates chromosomal speciation – is an attempt to reconcile those two observations.

In a large, panmictic population, selection would tend to eliminate individuals who mate with first-degree relatives as a result of decreased viability due to inbreeding depression and the increased frequency of expression of homozygous lethal alleles.

However, in very small, isolated populations individuals who occasionally mate with first degree relatives (i.e. "facultative first degree inbreeders") could easily have a selective advantage of individuals who avoid mating with first degree relatives (i.e. "obligate outbreeders").

Males in particular would tend to loose less as the result of mating with first degree relatives, as their parental investment in offspring is lower (i.e. they can waste gametes and even zygotes by mating with their first degree relatives, without significantly decreasing their reproductive success).

However, even females can cut their losses by mating with first degree relatives if the likely alternative is failure to mate at all due to unavailability of non-relatives. This would especially be the case in small, isolated populations, which are exactly the kind of populations in which speciation is most likely to occur.

The effects described above would be facilitated by increased genomic homogeneity, such as would result from genetic bottlenecks and founder effects. This is because close inbreeding intensifies genomic homogeneity and decreases genetic variation, especially in isolated populations with decreased gene flow from other populations.

This hypothesis – that first degree inbreeding facilitates chromosomal speciation – immediately suggests a series of predictions, all of which are empirically testable:

• The frequency of mating between first degree relatives should be inversely correlated with effective breeding population size. That is, the smaller the effective breeding population, the greater the frequency of mating between first degree relatives (i.e. “first degree inbreeding”).

• The increased frequency of “first degree inbreeding” in such populations should be more pronounced in males. That is, males should be more likely to attempt mating with first degree relatives, especially in small, isolated populations.

• The frequency of “chromolocal mutations” (that is, chromosomal fission/fusion/inversion/translocation mutations) should also be inversely correlated with effective breeding population size. That is, the smaller the effective breeding population, the greater the frequency of viable “chromolocal mutations.”

• Peripatric speciation events should be correlated with small population size, chromolocal mutations, and first degree inbreeding.

• Speciation resulting from chromolocal mutations should be much less common in large, panmictic populations.

• First degree inbreeding should also be much less common in large, panmictic populations.

• The success rate of artificial (i.e. facilitated/forced) first degree mating should be directly correlated with the degree of inbreeding. That is, the more inbred a population, the more successful artificial first degree inbreeding should be.

• Paleogenomic analysis should find close correlations between genetic bottlenecks, founder events, and peripatric speciation events and the frequency of chromolocal mutations and genetic homogeneity (resulting from first degree inbreeding).

• Relatively large changes in phenotype resulting from chromolocal effects should be more common in small, isolated populations.

• Speciation should be easier (and therefore more frequent) among asexually reproducing eukaryotes, such as plants and parthenogenic animals (among whom aneuploidy is largely irrelevant).

Let me stress two things about the foregoing:

• What I am suggesting is, at this stage, merely a hypothesis, but one that generates a series of immediately testable predictions.

• The hypothesis is, of course, based on the idea that incest (i.e. first degree inbreeding) is the most likely explanation for the diffusion of chromolocal mutations throughout small, isolated populations of animals. Let me stress as strongly as possible that I am NOT advocating incest, I am simply pointing out that first degree inbreeding would facilitate the kind of chromolocal mutations that are often correlated with species differences in animals. The same is also true for plants, of course, but in plants we don't call it "incest," we call it "self-pollination."

At the time that I proposed this hypothesis in November, 2006, I was a little perplexed at why no one has yet proposed this mechanism, given the fact that it is already used as the explanation for speciation in plants via polyploidy. The only explanation that seems reasonable to me is that most evolutionary biologists assume that animals will always avoid mating with first-degree relatives as a result of the increased frequency of inbreeding depression and expression of homozygous lethal alleles that result from it.

However, the Grants' observation of incipient speciation among the finches of Daphne Major, which was apparently facilitated by first-degree inbreeding lends support to my hypothesis.

And that's a reason for me to give thanks next week — Happy Thanksgiving, one and all!

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As always, comments, criticisms, and suggestions are warmly welcomed!

--Allen

The ID Cookie Crumbles...


During this year of celebration of Darwin and evolutionary biology, Intelligent Design (ID) supporters are fond of asserting that a branch of the biological sciences that currently accounts for over 100 regularly published journals (containing over 1000 peer-reviewed scientific reports) per year, over 1000 books published by reputable scientific publishers per year, and involving grant and foundation support amounting to several billion dollars per year is "crumbling", while ID, which accounts for not one peer-reviewed scientific journal and one peer-reviewed book (published over a decade ago) is replacing it.

I can go to Mann Library here at Cornell (the second largest library of biology in the world, comprising over a million books and bound periodicals) and find the equivalent of an entire floor devoted to evolutionary biology. I couldn't carry this month's issues of the various journals devoted to evolutionary biology to the loan desk, even if I used a large laundry basket and made several trips. I have a paltry selection of the most current books on the subject of evolution in my personal library: only 1000+ volumes published in the past ten years or so. If I had unlimited funds, I could buy ten times as many, and still could not keep up with the field.

Virtually every large university in the world has a department of ecology and evolutionary biology. Here at Cornell we have such a department, with almost two dozen professors and dozens of graduate students, and there are at least five other departments at Cornell who number evolutionary biologists among their members. There are almost half a dozen undergraduate and graduate organizations devoted to the scientific aspects of evolutionary biology at Cornell; branches of such societies are found worldwide.

By contrast, there are two tenured professors in the entire world who explicitly support ID, only one of whom is in a department devoted to an empirical science (the other teaches at a theological seminary). Neither of them is currently engaged in empirical research intended to validate ID.

Of the 35+ undergraduate IDEA clubs (a very liberal estimate) that were founded during the heyday of ID (the late 1990s and early 2000s), not one is currently maintaining a website or apparently meeting regularly. And according to Google Trends, interest by the news media in ID has fallen almost to zero since the Kitzmiller v. Dover trial in late 2005, while interest in evolutionary biology is at an all-time high and still increasing with no end in sight.

So, based on the empirical evidence, which is "crumbling", evolutionary biology or ID?

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As always, comments, criticisms, and suggestions are warmly welcomed!

--Allen

Books in Celebration of the 150th Anniversary of the Origin of Species


2009 marks several important anniversaries in the science of evolutionary biology. Perhaps the two most important are the 200th anniversary of the birth of Charles Darwin and the 150th anniversary of the publication of his most important book, On the Origin of Species, originally published in November of 1859. Scientific societies around the world are celebrating these two events, with “Darwin Day” observances at hundreds of colleges, universities, and museums, including Cornell University and the Museum of the Earth at the Paleontological Research Institution in Ithaca, New York.

Publishers are also celebrating these two anniversaries, bringing out a flood of books on Darwin and evolution. There isn’t space in this blogpost to note all of these publications, but we can mention some of the most noteworthy and relevant of these publications. Here is an annotated list of some of the best and most comprehensive publications that have come out recently, celebrating the life and work of Charles Darwin and his theory of evolution by natural selection. The full publication information for each work is included in this list, followed by a brief paragraph describing its contents.

DARWIN'S BOOKS (in print)
Darwin, Charles (Edward O. Wilson, editor) (2005) From So Simple a Beginning: Darwin's Four Great Books. W.W. Norton & Co.: New York, NY, ISBN 0393061345 (hardcover, $39.95), 1706 pages. Available here.
Perhaps the best way to celebrate Darwin’s life and work is to read his most important and influential books. In preparation for the Darwin bicentennial several publishers have brought out various versions of his books. This one is the best, not only because it includes his four most influential publications, but also because the editor, evolutionary biologist Edward O. Wilson, provides a brief but illuminating introduction to each one. Wilson places Darwin’s work in its historical and scientific context, and shows how each of his four great books laid the groundwork for the modern science of biology. If you only have time for one of these books, let this compendium be the one you read this year.


Darwin, Charles (James T. Costa, editor) (2009) The Annotated Origin: A Facsimile of the First Edition of On the Origin of Species. Belknap Press of Harvard University Press: Cambridge, MA, ISBN 0674032810 (hardcover, $35.00), 576 pages. Available here.
Darwin didn’t originally intend to publish the book we now know as the Origin of Species. He was working on a much longer multi-volume work that he intended to call Natural Selection, and rushed to publish an “abstract” of this work in 1859 to forestall losing his priority for the idea to Alfred Russell Wallace. As a consequence, the Origin of Species has no footnotes, endnotes, nor bibliography. This version of the Origin makes up for that lack. Ably edited by James Costa, The Annotated Origin contains many of the annotations that the original Origin of Species lacked, and provides the reader with a comprehensive grounding in the natural history that Darwin marshaled in support of his revolutionary theory.


Darwin, Charles (David Quammen, editor) (2008) On the Origin of Species: The Illustrated Edition. Sterling Publishers: New York, NY, ISBN 1402756399 (hardcover, $35.00), 560 pages. Available here.
Darwin rushed to publish the Origin of Species, and included only one technical illustration in the first edition. This lack of illustrations has been rectified in David Quammen’s beautifully illustrated version of the Origin. Perhaps best known for his masterful book on island biogeography and extinction, The Song of the Dodo, Quammen has chosen a huge selection of images that illuminate Darwin’s theory in ways that Darwin himself would have found both fascinating and extremely valuable for a deeper understanding of his theory.

DARWIN'S BOOKS (online)

The Internet has provided readers and scholars today with an unparalleled opportunity to study the works of Darwin online. By far the best of these electronic resources is a website initiated and maintained by John Van Whye and his colleagues in England. Available online at http://darwin-online.org.uk/, The Complete Works of Charles Darwin includes not only all of Darwin’s books (available in all of their various editions), but also photographic facsimiles of these works side-by-side with searchable full text versions, plus all of Darwin’s scientific publications and a massive and growing collection of his voluminous correspondence. Here is a sampling:

Darwin, Charles (1845) Journal of Researches into the Natural History and Geology of the Countries Visited During the Voyage of H.M.S. Beagle Round the World, Under the Command of Capt. Fitz Roy, R.N. 2d edition. John Murray: London, UK, 536 pages. Text and images available here.
This was Darwin’s first and most popular book for the general public, establishing him as the premier naturalist in England at the time of its publication. Continuously in print since 1845, the Voyage of the Beagle (as it is most often referred to) is both a marvelous compendium of natural history and a fascinating journal of a voyage of discovery almost unparalleled in the literature of science.


Darwin, Charles (1859) On the Origin of Species by Means of Natural Selection, or the Preservation of Favoured Races in the Struggle for Life. John Murray: London, UK, 522 pages. Text and images available here.
Darwin’s most important book, and perhaps the most important book ever published in the science of biology. Indeed, a strong argument could be made that this book single-handedly founded the modern science of biology. This online edition juxtaposes the text of the Origin with photographs of the corresponding pages from the first edition.


Darwin, Charles (1871) The Descent of Man, and Selection in Relation to Sex. John Murray: London, UK, 424 pages. Text and images available here.
Darwin’s second most important book, and perhaps the most controversial of his published works, the Descent of Man (as it is most often referred to) contains Darwin’s proposal that humans have evolved from “lower” primates, and a detailed exploration of what Darwin believed to be the most important mechanism in the evolution of humans: sexual selection. Darwin also speculates on the evolutionary origin of such uniquely human traits as art, language, and morality.


Darwin, Charles (1871) The Expression of the Emotions in Man and Animals. John Murray: London, UK, 374 pages. Text and images available here.
One of Darwin’s lesser-known books, but no less important in its own way, The Expression of the Emotions in Man and Animals is often credited with founding the modern science of animal behavior. In it, Darwin explored the biological basis for the expression of emotions in humans and other animals, with detailed examples (many with accompanying photographs) that show how human emotions are most probably derived from the emotions of other “lower” animals, including dogs as well as monkeys and other primates.

DARWIN'S LIFE AND WORK (adults/general)

Many people (including many evolutionary biologists) not only have never read Darwin's books, but also do not know how Darwin came to write them. Furthermore, opponents of Darwin's theories often portray Darwin's life and personal beliefs in as negative a light as possible, in an attempt to discredit his theories. Perhaps the best antidotes to both of these deficiencies are the books listed here, which together provide a comprehensive view of Darwin's life and work. Most of them are written for non-scientists, and all of them provide a fascinating glimpse into the work of the founder of the science of biology.

Browne, Janet (1996) Charles Darwin: A Biography, Volume 1: Voyaging. Princeton University Press: Princeton, NJ, ISBN 0691026068 (paperback, $25.95), 622 pages. Available here.
Although not explicitly published in celebration of the Darwin bicentennial, Janet Browne’s two-volume biography of Darwin is widely recognized as the premier biography of the founder of evolutionary biology. This first volume covers Darwin’s youth and early career, up to the completion of the voyage of HMS Beagle and the germination of his theory of evolution by natural selection. Using the extensive collection of Darwin’s correspondence along with personal papers and those of his family and scientific associates, Browne draws a detailed and sometimes surprising portrait of the founder of the most comprehensive and controversial theory in the natural sciences.


Browne, Janet (2003) Charles Darwin: A Biography, Volume 2: The Power of Place. Princeton University Press: Princeton, NJ, ISBN 0691114390 (paperback, $25.95), 600 pages. Available here.
In this second volume of Janet Browne’s two-volume biography of Darwin, Janet Browne explores the origin of the Origin of Species and Darwin’s other ground breaking and revolutionary works. Unlike some of Darwin’s other biographers, Browne gets most of the science right in her biography, and illuminates Darwin’s ideas in light of his detailed work in natural history. She also provides insights into Darwin’s personality, including his much-noted reclusive nature, and shows how his scientific work and ideas were influenced by events in his private life.


Darwin, Charles (Nora Barlow, editor) (1993) The Autobiography of Charles Darwin: 1809-1882. W.W. Norton & Co.: New York, NY, ISBN 0393310698 (paperback, $14.95), 224 pages. Available here.
Although Darwin wrote an autobiography, he never intended it to be a comprehensive history of his life or his ideas. Rather, he did it almost on a lark, as a kind of “gift” to the members of his family and closest friends. Despite this, his autobiography provides some fascinating insights into his personality, and especially his views on art, literature, religion, ethics, and philosophy. This edition includes autobiographical material that was suppressed by Darwin’s widow and son, and should be considered to be the definitive edition.


Darwin, Charles (Gordon Chancellor & John Van Wyhe, editors) (2009) Charles Darwin’s Notebooks from the Voyage of the Beagle. Cambridge University Press: New York, NY, ISBN 0521517575 (hardcover, $150.00), 650 pages. Available here.
This is an expensive, but absolutely invaluable publication, brought out by Cambridge University Press as part of this year’s bicentennial celebration and edited by Gordon Chancellor and John Van Whye (the same John Whye who maintains the complete works of Darwin online). It contains the entirety of Darwin’s handwritten journals of the voyage of HMS Beagle, written during the voyage. In it one can trace the development of Darwin’s revolutionary ideas as they first occurred to him, and see how the events of the voyage laid the groundwork for his revolutionary theories. This is a must-have edition for anyone who wants to understand how and when the Darwinian revolution began.


Desmond, Adrian & Moore, James (2009) Darwin's Sacred Cause: How a Hatred of Slavery Shaped Darwin's Views on Human Evolution. Houghton Mifflin Harcourt: New York, NY, ISBN 0547055269 (hardcover, $14.95), 448 pages. Available here.
Charles Darwin was born on February 12, 1809, the same day as Abraham Lincoln. This propinquity of origins is all the more notable when one realizes that Darwin and his family were staunch abolitionists. Darwin himself tells how he became horrified by the institution of slavery while on the voyage of HMS Beagle.

Desmond and Moore, whose 1994 biography of Darwin (Darwin: The Life of a Tormented Evolutionist, available here) is widely recognized as one of the best biographies of Darwin, have in this volume dug deeper into Darwin’s personal history, showing how his views on slavery and its abolition helped shape his views on the evolution of humans, as outlined in his Descent of Man.


McCalman, Iain (2009) Darwin's Armada: Four Voyages and the Battle for the Theory of Evolution. W.W. Norton & Co.: New York, NY, ISBN 0393068145 (hardcover, $29.95), 432 pages. Available here.
Although perhaps the best known, Darwin’s round-the-world voyage aboard HMS Beagle was not by any means the only such voyage of discovery in the 19th century. Three of Darwin’s closest friends and collaborators in evolutionary biology — botanist Joseph Hooker, zoologist Thomas Henry Huxley, and professional collector and naturalist Alfred Russell Wallace — all participated in similar voyages, and all contributed to Darwin’s theories. McCalman describes all four voyages, and shows how the insights and information about natural history gained by these four great naturalists provided the foundation for the science of evolutionary biology in the 19th and early 20th centuries.


Quammen, David) (2007) The Reluctant Mr. Darwin: An Intimate Portrait of Charles Darwin and the Making of His Theory of Evolution. Atlas Books: New York, NY, ISBN 039332995X (paperback, $35.00), 304 pages. Available here.
Quammen’s biography of Darwin’s personal origin of the Origin is a perfect companion to Janet Browne’s two-volume biography of Darwin. Focusing on the period in Darwin’s life leading up to the original publication of the Origin, Quammen shows how Darwin’s personality and early education predisposed him to the intellectual and emotional labor that resulted in the publication of the Origin and its reception by the scientific community.

DARWIN'S LIFE AND WORK (children/school)

All too often people think that the work of great scientists such as Charles Darwin is only accessible to adults, especially scientists. Here is a brief selection of books for children, all published during this bicentennial year, which present Darwin and his work in a way that anyone, including young children, can understand and appreciate.

Heiligman, Deborah (2009) Charles and Emma: The Darwins' Leap of Faith. Henry Holt and Co.: New York, NY, ISBN 0805087214 (hardcover, $18.95), 272 pages. Available here.
Heiligman’s biography of Charles and Emma Darwin begins with Charles drawing up a list of the pros and cons of marriage to his first cousin, Emma. His decision to marry her set in motion an emotional odyssey for Charles and Emma, who had very different views of religion. Charles’ theory of evolution threatened Emma’s deep religious belief, and forced Darwin to thoroughly document his views before publishing them. This sympathetic rendering of their happy, though sometimes turbulent, marriage is a wonderful introduction to the real life of a famous scientist, one that young adults will find particularly relevant to their own lives.


Lasky, Kathryn (2009) One Beetle Too Many: The Extraordinary Adventures of Charles Darwin. Candlewick Press: Somerville, MA, ISBN 076361436X (hardcover, $17.99), 48 pages. Available here.
Lasky’s copiously illustrated account of Darwin’s life and work, focusing especially on his adventures while on the voyage of HMS Beagle, gives younger readers an engaging look at the work of the founder of the theory of evolution by natural selection. Lasky does not shy away from Darwin’s views on evolution and religion, presenting them in Darwin’s own words. The illustrations are particularly charming, rendered in various media in a quirky and engaging style.

McGinty, Alice B. & Azarian, Mary (2009) Darwin, with Glimpses into his Private Journal and Letters. Houghton Mifflin Books for Children: New York, NY, ISBN 0618995315 (hardcover, $18.00), 48 pages. Available here.

Another illustrated account of Darwin’s life and work, this time covering his childhood, his adventures while on the voyage of HMS Beagle, and the subsequent development of his theory of evolution by natural selection. gives younger readers an engaging look at the work of the founder of the theory of evolution by natural selection. Illustrated with woodcuts and watercolor, McGinty and Azarian’s biographical history also touches on Darwin’s views on religion and philosophy in a way that is accessible to younger readers.


Schanzer, Rosalyn (2009) What Darwin Saw: The Journey That Changed the World. National Geographic Children's Books: Des Moines, IA, ISBN 1426303963 (hardcover, $18.00), 48 pages. Available here.
Schanzer’s illustrated account of Darwin’s voyage of HMS Beagle is more limited in scope than the others in this list, but succeeds in presenting Darwin’s natural history investigations in an engaging (and sometimes humorous) way. More like a graphic novel than a standard biography (complete with cartoon-like illustrations and speech balloons), Schanzer presents selected observations that led Darwin to his theory of evolution. Unlike the other three books for younger readers in this list, Schanzer avoids discussion of Darwin’s views on religion and philosophy, sticky strictly to the natural history of his historic voyage and the science that it inspired.

In addition to the books listed and reviewed here, those who are interested in the life and works of Charles Darwin can search Amazon.com, where most of the books listed above can be browsed, along with many others published in connection with the Darwin bicentennial. Books on the subject of evolution are listed here, including books both supportive of Darwin’s theory and critical of it.

I hope this list provides you with some ideas of how to celebrate Darwin's life and work by learning more about it.

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As always, comments, criticisms, and suggestions are warmly welcomed!

--Allen