Skepticblog

I’ve just survived four days of The Amazing Meeting 9 in Las Vegas, and my head is buzzing with so many thoughts—so many great talks—so many friends I haven’t seen since TAM8 last year, and new ones I met for the first time after months of email and Facebook exchanges. TAM never fails to exhilarate me—and exhaust me. My favorites: Bill Nye’s brilliant pep talk for science and space exploration; Dawkins’ wonderful preview of his new book and his speculations about extraterrestrial life; PZ Myers’ very different take on the non-prevalence of humanoids on other planets; Elizabeth Loftus’ succinct review of her lifetime of research showing the unreliability of human memory; and especially the message at the end of both Neil DeGrasse Tyson’s and Sean Faircloth’s presentations: we need to dial back all the petty sniping within our ranks and realize that we face a very serious enemy out there of religious and political zealots who do not value science, skepticism, critical thinking, or “reality-based” political views. They outnumber us; they are well funded by right-wing think tanks and evangelical churches; and they have elected plenty of people in power who are already pushing their agenda. I realize that getting skeptics and freethinkers to work together is like herding cats, but we have a powerful entrenched opposition that will require every resource at our disposal to hold them at bay, let alone push them back. They are already eroding science education and displacing good science with pseudoscience in public policies.

But my favorite talk was Eugenie Scott’s presentation, “Deja Vu all over again: Denialism of Climate Change and Evolution.” It gave me a sense of deja vu, because apparently without knowledge of each others’ work, we have converged on a common topic. This is what philosopher William Whewell would call a “consilience” or common agreement of different lines of evidence or threads of argument. As I independently pointed out in my upcoming book written last summer about science denialism, entitled Reality Check, and in a paper I wrote which is now in press, there are tremendous parallels between the evolution-deniers (creationists), the climate change deniers, and many other types of science deniers. Even more striking, they borrow most of their tactics from the prototypical reality deniers, the Holocaust revisionists, along with the tactics of the tobacco companies in creating “doubt” through PR to obscure the real science.

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A few weeks ago my email box was full of gloating messages from creationists claiming that the latest discovery of complex eyes in the Cambrian “proved” creationism and “refuted” evolution. As usual, creationists demonstrate a remarkable ability to completely misunderstand and misinterpret real science, and get the message of the paper ass-backward. The article to which they referred is an excellent new paper on the appearance in the Early Cambrian of compound eyes, slightly earlier than they were known previously. But creationists doesn’t know enough science to understand the paper—all they do is read “complex eyes” and “Early Cambrian” in the title, and to them, “Darwinism is falsified.” It never ceases to amaze me how they can mangle legitimate research to mean just the opposite of what was written, but so strong are their belief filters that they hear only what they want to hear, and completely miss the point of most of the world of science that doesn’t fit their preconceived notions.

The discovery itself is quite remarkable, and good discussions are given here and here. From the Lower Cambrian Emu Bay Shale of Kangaroo Island, South Australia, are nicely preserved elements (ommatidia) of compound eyes, which are larger and more complex than any others known from the Early Cambrian (although similarly complex but smaller compound eyes are found in trilobites of the Atdabanian Stage of the Cambrian, just  a few million years later). The eyes themselves are individual molts and not attached to bodies, but they were once part of some large arthropod. Some ommatidia have over 3000 lenses, equal to many of the compound eyes found since the Cambrian. Although it forces us to revise our treatment of the history of eyes a bit, it it not “the end of Darwinism” as creationists claim. The molecular data have long predicted that complex compound eyes should have appeared long before we see them in the fossil record, but were simply not preserved because they had no hard parts yet (probably because conditions in the Precambrian and Early Cambrian oceans only gradually reached a threshold that allowed mineralization of soft tissues). This discovery simply extends the range of compound eyes back a few million years earlier than we had known previously.

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Biologist and paleontologists are all familiar with the name of Lynn Margulis. Now 73, she made her reputation in the 1960s for her “endosymbiosis” hypothesis: the idea that complex eukaryotic cells with all their organelles were assembled from prokaryotes which came to live symbiotically within the walls of other prokaryotic cells. Her hypothesis was first proposed by Merezhovsky in 1905 and Wallin in 1920, but Margulis used the great advances in microscopy and microbiology in the 1960s to show that the idea was highly plausible. At first, her papers were rejected by at least 15 journals before they were finally published. But as time passed, the evidence for much of her “outrageous idea” continued to accumulate. It does indeed appear that the chloroplasts of the eukaryotic cell are derived from symbiotic cyanobacteria (as it is common that many animals, from large benthic foraminifera to hermatypic corals to giant clams, use algae in their own tissues symbiotically), and that mitochondria were once purple non-sulfur bacteria. The best evidence comes from the fact that organelles have their own DNA independent of the cell’s nuclear DNA (we hear about research on mitochondrial DNA all the time); that organelles can divide independently of their host cell and have their own ribosomes; that organelles can be killed by antibiotics, just like their prokaryote ancestors, while the host cell is not killed. In addition, there are now numerous examples of eukaryotes which still use endosymbiotic prokaryotes to perform various functions, and have not completely absorbed and transformed them into organelles of the host cell. Over the years, Margulis has promoted additional ideas about the importance of symbiosis in biology, and has become a major advocate of the “Gaia” hypothesis and how all of life is dependent on the rest of life in an intricate, delicate web.

Margulis’ sheer determination in getting her ideas heard, and finding scientific evidence to support them, was remarkable, especially in a age where the idea was highly unorthodox. But she was never an orthodox scientist to begin with. Admitted to the University of Chicago when she was 14, she married Carl Sagan when she was 19, and her son Dorion Sagan is a frequent coauthor with her on her books. Her other child with the great astronomer, Jeremy Sagan, is a software developer and the founder of Sagan Technology. As the years go by and more and more people recognize her pioneering work, she has received all sorts of honors: membership of the National Academy of Sciences in 1983, the 1999 National Medal of Science, the 2008 Darwin-Wallace Medal, the William Procter Prize for Scientific Achievement, and her papers are archived at the Library of Congress. Continue reading…

What does the democratic uprising in Egypt and other Arab nations have to do with IBM’s Jeopardy champion Watson in determining the fate of civilization? Think bottom up, not top down; think exponential growth, not linear change; think crowd sourcing, not elite commanding; and think open access and transparency, not closed entree and secrecy. Under the influence of these four forces, such seemingly unconnected events are, in fact, connected at a deeper level when we pull back and examine the overall trajectory of the history of civilization. Continue reading…

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This past weekend, December 17–19, 2010, I joined paleontologists Donald Prothero from Occidental College and John Long from the Natural History Museum of Los Angeles County on a fossil hunting, rock hopping, geology viewing, petroglyph scanning excursion through the Mojave Desert between Los Angeles and Las Vegas. Through the entire trip I kept thinking “I wish the creationists and Intelligent Design theorists would try their hand at some actual field work because then they would see (and hear and smell and especially touch) what nature is really like and what the history of life reveals in the rocks, instead of sitting in an air-conditioned or heated office in some think tank building or school of theology department, trolling through published papers by real scientists who do this field work, trying to find some little gap that must be filled by the creating designer. Continue reading…

I’m elated to announce that my Junior Skeptic-based book Evolution: How We and All Living Things Came to Be is a 2011 nominee for the prestigious Silver Birch® Nonfiction Award! This is a tremendous honor (for which I thank my illustration collaborator Jim W. W. Smith, my editor Valerie Wyatt at Kids Can Press, producer Pat Linse — and the Skeptics Society for making the project possible in the first place).

Each year, the Ontario Library Association showcases selected titles for its Forest of Reading® program — a heavily-promoted recreational reading initiative, widely supported throughout Ontario’s public schools and public libraries. Among the 250,000 participating young readers, kids who read a minimum of five of the 10 books in their reading category will become eligible to vote for the award in that category.

The Forest of Reading program runs throughout the Spring, culminating with award ceremonies in front of an audience of several thousand at Canada’s largest literary event for younger readers: the Festival of Trees™ at the Harbourfront Centre in Toronto (May 11 and 12, 2011).

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Even before I started writing Evolution: How We and All Living Things Came to Be I knew that it would very briefly mention religion, make a mild assertion that religious questions are out of scope for science, and move on. I knew this was likely to provoke blow-back from some in the atheist community, and I knew mentioning that blow-back in my recent post “The Standard Pablum — Science and Atheism” would generate more. And, I should have realized that I was muddying the water by packaging multiple related issues together in one post: the specific wording of a passage in my book; the question of whether that passage should have been included; and, the wider question of how science and skepticism relate to atheism.

Still, I was surprised by the quantity of the responses to the blog post (208 comments as of this moment, many of them substantial letters), and also by the fierceness of some of those responses. For example, according to one poster, “you not only pandered, you lied. And even if you weren’t lying, you lied.” (Several took up this “lying” theme.) Another, disappointed that my children’s book does not tell a general youth audience to look to “secular humanism for guidance,” declared  that “I’d have to tear out that page if I bought the book.” Continue reading…

I’m pleased to say that the release of Evolution: How We and All Living Things Came to Be has been enjoying quite a bit of attention from skeptics — which has helped this full-color kids’ book get off to a great start. Perhaps the most rewarding moment for me so far was receiving a warmly positive quote from Dr. Eugenie Scott (Executive Director of the National Center for Science Education and 2010 National Academy of Sciences “Public Welfare Medal” recipient). Genie is one of the softest, yet most forthright and resolute voices in skepticism, and a great inspiration to me personally. You can imagine my elation when she said,

I am just so delighted with this book! Loxton hits the key concepts perfectly, and without being stuffy about it. A wonderful book to donate to your local library.

I was similarly honored to receive positive reviews from Phil Plait and from P.Z. Myers — both among the most popular science bloggers on Earth. I just about did cartwheels when P.Z. unexpectedly urged readers to “order a copy fast for the kids in your life!”

P.Z., did, however, dislike one subsection of Evolution:

I recommend it highly, but with one tiny reservation. The author couldn’t resist the common temptation to toss in something about religion at the end, and he gives the wrong answer: it’s the standard pablum, and he claims that “Science as a whole has nothing to say about religion.”

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I’m excited to announce the release of my new book Evolution: How We and All Living Things Came to Be (from Kids Can Press). Years in the making, this full-color, illustrated hardcover book based upon Junior Skeptic is available now!

• view the Skeptic.com listing >

(Also available from bricks & mortar booksellers throughout North America, and from Amazon.com)

The Project

Evolution: How We and All Living Things Came to Be is a straight-ahead introduction to the fact of evolution, to its mechanisms, and to the misunderstandings that surround it. The book aims to explain how evolution works — and how we know for a fact that it happens. It is suitable for readers aged 8 – 13.
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“News flash: skeptics hack the Answers in Genesis website!” Or, at least, that was the joke  Skeptic co-publisher Pat Linse made when I read her some pro-natural selection material from the young Earth creationist organization’s slick online portal.

For years, I’ve been surprised how rarely this is mentioned: young Earth creationists need Darwin to be right — and when you press them on it, they often agree that he was.

Doesn’t sound like the creationism you know? It’s not a hacker’s prank, and it’s not a radical re-thinking of creationism. It is, however, a nuance as important as it is surprising: creationist leaders share Darwin’s belief that species routinely change (and even originate) through mutation and natural selection.

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