New Books in Biology and Evolution

What should we study? The eighteenth-century luminary and poet Alexander Pope had this to say on the subject: “Know then thyself, presume not God to scan; The proper study of mankind is man ” (An Essay on Man, 1733). He was not alone in this opinion. The philosophers of the Enlightenment–of which we may count Pope–all believed that humans would benefit most from a proper comprehension of temporal things, and most particularly humanity itself. For them, understanding humanity meant, first and foremost, understanding the human body. Naturally, then, the philosophes and their successors paid close attention to the body. They cut it up, took it apart, measured it and attempted to see how it worked. They were most interested in one part in particular–the human head. It was the seat of the human characteristic the Enlightenment scientists admired most: intelligence. If one could get a handle on the human cranium, then one would understand what it meant to be human. Or at least so they thought.In her fascinating new book The Skull Collectors: Race, Science and America’s Unburied Dead (University of Chicago Press, 2010), Ann Fabian introduces us to a group of American philosophes who began to collect and study human crania in the first half of the nineteenth century. Not surprisingly, they took most of their cues from their European counterparts. They did, however, adapt craniology to a peculiar American context. Living in a social order in part built on supposed racial difference, the American skull collectors knew that what they said about Africans mattered. Their work could support the suppositions of slavery, or not. Moreover, living in a social order that was at the very time they were working involved in a quasi-genocidal campaign against indigenous peoples, the American skull collectors knew that what they said about Native Americans mattered as well. Their work might buttress the movement for Indian removal, or it might not. And being people of the “New World,” the American skull collectors knew that they were looked down upon by many of their European colleagues. They needed to collect skulls aggressively in order to establish craniology as an American science.As one might expect, the American skull collectors were, by our lights, a strange bunch. Racists, imperialists, and nationalists to be sure. But also scientists, curators, and founders of physical anthropology. Thanks to Ann for bringing them to us in all their contradictory richness.Please become a fan of “New Books in History” on Facebook if you haven’t already. Learn more about your ad choices. Visit megaphone.fm/adchoices

Long ago, historians more or less gave up on “theories of history.” They determined that human nature was too unpredictable, cultures too various, and developmental patterns too evanescent for any really scientific theory of history to be possible. Human history, they said, was chaos.The problem is that human history isn’t chaos at all. The “hard” human sciences–evolutionary biology and anthropology in particular–have shown that human nature is quite predictable, cultural variability is strictly constrained, and ongoing patterns of social development have ancient roots. Historians can ignore these facts all they like, but that doesn’t make them any the less true. It does, however, impoverish their discipline by ceding the search for a satisfying theory of history to scientists. Neither Paul Bingham nor Joanne Souza are historians. The former is a molecular biologist and the latter an evolutionary psychologist. But they have formulated an elegant theory of human history in Death From a Distance and the Birth of a Humane Universe (2009). Like any good theory, it explains a lot with a little. To put it briefly, human society has gone from simple/small to massive/complex because humans alone among animals were/are able to suppress intra-group conflicts of interest by means of low-cost coercion. Bingham and Souza point out that the big “jumps” in social size and complexity–the neolithic revolution, the growth of archaic states, the birth of the nation-state, the rise of globalization–have all been associated with the evolution/introduction of new, more powerful coercive abilities. Paradoxically, it was new weapons that created more and better lives over the course of the last several hundred thousand years.This brief summary cannot do justice to the richness of Bingham’s and Souza’s theory. You need to read it for yourself. When you do, I guarantee you will see the past and present in a new way.Please become a fan of “New Books in History” on Facebook if you haven’t already. Learn more about your ad choices. Visit megaphone.fm/adchoices

Gregory Cochran, expert in human genetics and evolution, challenges the belief that human genetic evolution ceased. He argues that minor genetic differences can have significant consequences and be selected for. The podcast explores the impact of cultural processes on genetic variations, the power of exponential growth in evolution, and the heritability of traits like light skin pigmentation and submissiveness. It also discusses the success of certain groups and the interconnectedness of culture and human evolution.