Acclaimed author Matt Ridley's thrilling follow-up to his bestseller `Genome'. Armed with the extraordinary new discoveries about our genes, Ridley turns his attention to the nature versus nurture debate to bring the first popular account of the roots of human behaviour. What makes us who we are? In February 2001 it was announced that the genome contains not 100,000 genes as originally expected but only 30,000. This startling revision led some scientists to conclude that there are simply not enough human genes to account for all the different ways people behave: we must be made by nurture, not nature. Yet again biology was to be stretched on the Procrustean bed of the nature-nurture debate. Acclaimed science writer Matt Ridley argues that the emerging truth is far more interesting than this myth. Nurture depends on genes, too, and genes need nurture. Genes not only predetermine the broad structure of the brain; they also absorb formative experiences, react to social cues and even run memory. They are consequences as well as causes of the will. Published fifty years after the discovery of the double helix of DNA, `Nature via Nurture' chronicles a new revolution in our understanding of genes. Ridley recounts the hundred years' war between the partisans of nature and nurture to explain how this paradoxical creature, the human being, can be simultaneously free-willed and motivated by instinct and culture. `Nature via Nurture' is an enthralling, up-to-the-minute account of how genes build brains to absorb experience.

Who were the First Americans? Where did they come from? When did they get here? Are they the ancestors of modern Native Americans? These questions might seem straightforward, but scientists in competing fields have failed to convince one another with their theories and evidence, much less Native American peoples. The practice of science in its search for the First Americans is a flawed endeavor, Robert V. Davis tells us. His book is an effort to explain why. Most American history textbooks today teach that the First Americans migrated to North America on foot from East Asia over a land bridge during the last ice age, 12,000 to 13,000 years ago. In fact, that theory hardly represents the scientific consensus, and it has never won many Native adherents. In many ways, attempts to identify the first Americans embody the conflicts in American society between accepting the practical usefulness of science and honoring cultural values. Davis explores how the contested definition of "First Americans" reflects the unsettled status of Native traditional knowledge, scientific theories, research methodologies, and public policy as they vie with one another for legitimacy in modern America. In this light he considers the traditional beliefs of Native Americans about their origins; the struggle for primacy-or even recognition as science-between the disciplines of anthropology and archaeology; and the mediating, interacting, and sometimes opposing influences of external authorities such as government agencies, universities, museums, and the press. Fossil remains from Mesa Verde, Clovis, and other sites testify to the presence of First Americans. What remains unsettled, as The Search for the First Americans makes clear, is not only who these people were, where they came from, and when, but also the very nature and practice of the science searching for answers.