The first chapter from A Cooperative Species: Human Reciprocity and Its Evolution by Samuel Bowles and Herbert Gintis. Paleogenomic Puzzles: DNA sequences of extinct hominins could rewrite human ancestry. A new study casts new light on the intermingling and migration of European, Middle Eastern and African populations since ancient times. An Amazonian tribe has been discovered that has no concept of time or dates, scientists say. Blood may not always be thicker than water, if a controversial finding from one of the world's best-preserved Stone Age settlements is to be believed. Research finds humans are evolving more slowly than previously predicted. Were you born selfish? An interview with Frans de Waal. Are we built to run barefoot? Humans may have been built to run barefoot, but we did not evolve to run barefoot with bad form. A review of The Wild Life of Our Bodies: Predators, Parasites, and Partners That Shape Who We Are Today by Rob Dunn. Humans and why they triumphed: How did one ape 45,000 years ago happen to turn into a planet dominator? The answer lies in an epochal collision of creativity. A thirst for fairness and an innate distaste for hierarchical extremes may have helped Homo sapiens survive. Social Darwinism: A review of How Many Friends Does One Person Need? Dunbar’s Number and Other Evolutionary Quirks by Robin Dunbar. The Human Skin Condition: Mother Nature gave us pimples, and then she made us self-conscious about them. Early members of the genus Homo, possibly direct ancestors of people today, may have evolved in Asia and then gone to Africa, not vice versa as many scientists have assumed. An interview with Mark Changizi, author of Harnessed: How Language and Music Mimicked Nature and Transformed Ape to Man. A look at amazing hunter-gatherer societies still in existence.
