Two new books centered on evolution and the human species

Here are two new books centered on evolution and the human species that readers here may be interested in:

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Philip Lieberman, The Theory that Changed Everything: “On the Origin of Species” as a Work in Progress (New York: Columbia University Press, 2017), 232 pp.

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Publisher’s description Few people have done as much to change how we view the world as Charles Darwin. Yet On the Origin of Species is more cited than read, and parts of it are even considered outdated. In some ways, it has been consigned to the nineteenth century. In The Theory That Changed Everything, the renowned cognitive scientist Philip Lieberman demonstrates that there is no better guide to the world’s living—and still evolving—things than Darwin and that the phenomena he observed are still being explored at the frontiers of science. In an exploration that ranges from Darwin’s transformative trip aboard the Beagle to Lieberman’s own sojourns in the remotest regions of the Himalayas, this book relates fresh, contemporary findings to the major concepts of Darwinian theory, which transcends natural selection. Drawing on his own research into the evolution of human linguistic and cognitive abilities, Lieberman explains the paths that adapted human anatomy to language. He demystifies the role of recently identified transcriptional and epigenetic factors encoded in DNA, explaining how nineteenth-century Swedish famines alternating with years of plenty caused survivors’ grandchildren to die many years short of their life expectancy. Lieberman is equally at home decoding supermarket shelves and climbing with the Sherpas as he discusses how natural selection explains features from lactose tolerance to ease of breathing at Himalayan altitudes. With conversational clarity and memorable examples, Lieberman relates the insights that led to groundbreaking discoveries in both Darwin’s time and our own while asking provocative questions about what Darwin would have made of controversial issues today, such as GMOs, endangered species, and the God question.

This book is reviewed, along with three other new titles about Darwin, in the Times Literary Supplement, and the author of said review discusses it for the TLS podcast.  And a so-so review from Publisher’s Weekly.

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Kostas Kampourakis, Turning Points: How Critical Events Have Driven Human Evolution, Life, and Development (New York: Prometheus Books, February 2018), 384 pp. 

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Publisher’s description Critical historical events–or “turning points”–have shaped evolution and continue to have a decisive effect on individual lives. This theme is explored and explained in this lucid, accessible book for lay readers. The author argues that, although evolution is the result of unpredictable events, these events have profound influences on subsequent developments. Life is thus a continuous interplay between unforeseeable events and their decisive consequences. As one example, the author cites the fusing of two chromosomes, which differentiated the human species from our closest animal relatives about 4 to 5 million years ago. This event was not predictable, but it had a profound effect on the evolution of our species thereafter. By the same token, certain unpredictable circumstances in the past enabled only Homo sapiens to survive to the present day, though we now know that other human-like species also once existed. The author contrasts such scientific concepts grounded in solid evidence with prevalent misconceptions about life: specifically, the religious notion that there is a plan and purpose behind life, the widespread perception that intelligent design governs the workings of nature, the persistent belief in destiny and fate, and the attribution of an overly deterministic role to genes. This excellent introduction for laypersons to core ideas in biology goes a long way toward dispelling such misconceptions and presents current scientific research in clearly understandable, jargon-free terms.

Again, this book is reviewed in Publisher’s Weekly.

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More articles on Darwin and paleontology

I’ve recently shared some notices of new articles on Darwin and paleontology (here and here), and have since learned that they and three more are all part of a special issue devoted to the topic. Here are the three others, in the journal Studies in History and Philosophy of Science Part C: Studies in History and Philosophy of Biological and Biomedical Sciences:

Introduction: Towards a global history of paleontology: The paleontological reception of Darwin’s thought

David Sepkoski and Marco Tamborini

Highlights Paleontology had an important role in the reception of Darwinian evolutionary ideas / The reception of Darwin by paleontologists varied significantly by national tradition / This special issue is a first step towards a global history of paleontology

American Palaeontology and the reception of Darwinism

Peter J. Bowler

Highlights Outlines the varying responses of American paleontologists to Darwinism / Explores the complexity of O. C. Marsh’s support for natural selection / Shows how neo-Lamarckians developed an alternative to Darwinism

“How nationality influences Opinion”: Darwinism and palaeontology in France (1859–1914)

Claudine Cohen

Highlights Analyzes different aspects of 19th century French anti-Darwinism, their causes and effects / Describes the emergence of transformist views in French late 19th-Century palaeontology / Examines the specificity of French Neo-Lamarckian thought / Studies the reference to Darwin’s thought in 19th century French palaeontological works (Gaudry, Saporta, Deperet, F. Bernard) / Studies evolutionary concepts involved in the approach to Human evolution

ARTICLE: Modelling with words: Narrative and natural selection

In the April 2017 issue of Studies in History and Philosophy of Science Part C: Studies in History and Philosophy of Biological and Biomedical Sciences:

Modelling with words: Narrative and natural selection

Dominic K. Dimech

Abstract I argue that verbal models should be included in a philosophical account of the scientific practice of modelling. Weisberg (2013) has directly opposed this thesis on the grounds that verbal structures, if they are used in science, only merely describe models. I look at examples from Darwin’s On the Origin of Species (1859) of verbally constructed narratives that I claim model the general phenomenon of evolution by natural selection. In each of the cases I look at, a particular scenario is described that involves at least some fictitious elements but represents the salient causal components of natural selection. I pronounce the importance of prioritising observation of scientific practice for the philosophy of modelling and I suggest that there are other likely model types that are excluded from philosophical accounts.

ARTICLE: The Creativity of Natural Selection? Part I: Darwin, Darwinism, and the Mutationists

A new article in the Journal of the History of Biology:

The Creativity of Natural Selection? Part I: Darwin, Darwinism, and the Mutationists

John Beatty

Abstract This is the first of a two-part essay on the history of debates concerning the creativity of natural selection, from Darwin through the evolutionary synthesis and up to the present. Here I focus on the mid-late nineteenth century to the early twentieth, with special emphasis on early Darwinism and its critics, the self-styled “mutationists.” The second part focuses on the evolutionary synthesis and some of its critics, especially the “neutralists” and “neo-mutationists.” Like Stephen Gould, I consider the creativity of natural selection to be a key component of what has traditionally counted as “Darwinism.” I argue that the creativity of natural selection is best understood in terms of (1) selection initiating evolutionary change, and (2) selection being responsible for the presence of the variation it acts upon, for example by directing the course of variation. I consider the respects in which both of these claims sound non-Darwinian, even though they have long been understood by supporters and critics alike to be virtually constitutive of Darwinism.

Journal special issue on “Replaying the Tape of Life: Evolution and Historical Explanation”

A whole issue of the journal Studies in History and Philosophy of Science Part C: Studies in History and Philosophy of Biological and Biomedical Sciences is devoted to the topic “Replaying the Tape of Life: Evolution and Historical Explanation.” The contents are as follows:

Introduction: Evolution and historical explanation
Peter Harrison, Ian Hesketh

What was historical about natural history? Contingency and explanation in the science of living things
Peter Harrison

The “History” of Victorian Scientific Naturalism: Huxley, Spencer and the “End” of natural history
Bernard Lightman

 

Theological presuppositions of the evolutionary epic: From Robert Chambers to E. O. Wilson
Allan Megill

 

What are narratives good for?
John Beatty

 

Counterfactuals and history: Contingency and convergence in histories of science and life
Ian Hesketh

The spontaneous market order and evolution
Naomi Beck

Contingency and the order of nature
Nancy Cartwright

 

Freedom and purpose in biology
Daniel W. McShea

 

“Replaying Life’s Tape”: Simulations, metaphors, and historicity in Stephen Jay Gould’s view of life
David Sepkoski

A case study in evolutionary contingency
Zachary D. Blount

 

Can evolution be directional without being teleological?
George R. McGhee Jr.

Evolutionary biology and the question of teleology
Michael Ruse

Contingency, convergence and hyper-astronomical numbers in biological evolution
Ard A. Louis

 

It all adds up …. Or does it? Numbers, mathematics and purpose
Simon Conway Morris

GUEST POST: Darwin’s Polar Bear

The following guest post is from writer and wilderness guide Michael Engelhard, whose new book Ice Bear: The Cultural History of an Arctic Icon is soon-to-be published by the University of Washington Press. Interested in doing a guest post about Darwin? Drop me an email at michaeldavidbarton AT gmail DOT com.

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Darwin’s Polar Bear

by Michael Engelhard

Any high school student knows (or should know) how the beaks of Galápagos “finches” (it was in fact the islands’ mockingbirds that were influential) – of species confined to different islands – helped Darwin to develop his ideas about evolution. But few people realize that the polar bear too, informed his grand theory.

Letting his fancy run wild, in On the Origin of Species, the man used to thinking in eons hypothesized “a race of bears being rendered, by natural selection, more and more aquatic in their structure and habits, with larger and larger mouths, till a creature was produced as monstrous as a whale.” Darwin based this speculation on a black bear the fur trader-explorer Samuel Hearne had observed swimming for hours, its mouth wide open, catching insects in the water. If the supply of insects were constant, Darwin thought, and no better-adapted competitors present, such a species could well take shape over time.

Systematic approaches to animals and their respective niches had long fertilized the intellectual landscape. Georges-Louis Leclerc, Comte de Buffon, in his Histoire Naturelle (published serially between 1749 and 1788) clearly distinguished a “land-bear” from a “sea-bear.” But his land-bear category was still muddled: it included a “white bear of the forest” as well as a white sea-bear. The count would have likely become aware of polar bears in the boreal forests of Hudson Bay by 1782, when France occupied Prince of Wales Fort at the mouth of the Churchill River. In a 1785 German edition of the Histoire Naturelle, Buffon’s white land-bear looks different from his sea-bear, clearly showing the shorter neck and snout characteristic of brown bears and black bears. Perhaps the count knew about British Columbia’s white black bears or “spirit bears,” which could have confused him. (Other contributions by Buffon were significant. He discovered the first principle of biogeography, noticing that despite similar environments, different regions have distinct plants and animals.)

Buffon’s classifying of animals by region or habitat – as in the case of the two “different” white bears – prompted later naturalists to try to explain their origins and distribution as resulting from the characteristics of a place. Long before the idea of “habitat” began to infiltrate scientific discourse, the polar bear’s range and that of its prey had been linked to environmental conditions. Synthesizing the work of the Comte de Buffon and other naturalists, the Anglo-Irish Romantic writer Oliver Goldsmith thought the “Greenland bear” exceptional, because it is “the only animal that, by being placed in the coldest climate, grows larger than those that live in the temperate zones. All other species of animated nature diminish as they approach the poles, and seem contracted in their size by the rigours of the ambient atmosphere… In short, all the variations of its figure and its colour seem to proceed from the coldness of the climate where it resides and the nature of the food it is supplied with.” Food availability does play a role in body mass, as does a region’s mean annual temperature, and while polar bears are not the only compact animal thriving in the Arctic such biogeographic observations anticipated the theory of evolution and principles of ecology.

On Svalbard expeditions in the summers of 1858 and 1859, the Scottish nobleman-explorer James Lamont watched polar bears frolic and dive. Intuiting that the animal had become what it is by living on seals, he deduced that the seal and the walrus must have originated first. Lamont assumed that polar bears had evolved from brown bears, “who, finding their means of subsistence running short, and pressed by hunger, ventured on the ice and caught some seals… so there is no impossibility in supposing that the brown bears, who by my theory were the progenitors of the present white bears, were accidently driven over to Greenland and Spitzbergen by storms or currents.” The palest brown bears with the greatest amount of external fat, Lamont thought, would have had the best chance to survive and therefore, reproduce. Upon his return, he wrote to Darwin, whose On the Origin of Species had been published in 1859. Encouraged by Darwin’s response, Lamont elaborated upon walrus and polar bear evolution in his 1861 travelogue, Seasons with the Sea-horses. Darwin approved of Lamont’s hypothesis and because Lamont’s thinking on the subject predated the publication of On the Origin of Species, he later credited Lamont (as he did Alfred Russell Wallace) with independently conceiving the theory of natural selection.

The oldest polar bear fossils found are from Svalbard and northern Norway and have been dated at 115,000–130,000 years old, before the beginning of the last Ice Age. But some biologists think that polar bears diverged from brown bears as early as 600,000 years ago. According to current research, polar bears evolved from brown bears that ventured onto the frozen ocean to stalk marine mammals, possibly after climate separated them from the main population descended from a common ancestor. This was not a single, clean-cut departure, and repeated pairings between both species have turned the family tree into a thicket. Shrinking sea ice could force polar bears to mingle with their southern cousins again, particularly as the latter now travel farther north. In coastal Arctic Alaska, grizzlies have been observed feasting on bowhead whale carcasses, sometimes in the company of polar bears and interbreeding has been documented.

After he had been ridiculed for his musings on a future, insect-eating cetacean bear, Darwin altered that passage in the second edition of Origin and removed it from subsequent ones. “The Bear case has been well laughed at, & disingenuously distorted by some into my saying that a bear could be converted into a whale,” he responded to the Irish algae specialist William Henry Harvey. Still, Darwin insisted that “there is no especial difficulty in a Bear’s mouth being enlarged to any degree useful to its changing habits,—no more difficulty than man has found in increasing the crop of the pigeon, by continued selection, until it is literally as big as whole rest of body.” Lamont’s observations and theorizing as well as the later findings about polar bear evolution vindicated the eminent naturalist and his thought experiment.

Image: L’ours de mer, the Comte de Buffon’s “sea-bear,” from his Histoire naturelle, générale et particulière, 1776. The French polymath paved the way for theories about speciation. (Université de Bordeaux)

Michael Engelhard is the author of Ice Bear: The Cultural History of an Arctic Icon (University of Washington Press). Trained as an anthropologist, he now lives in Fairbanks, Alaska and works as a wilderness guide in the Arctic.

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