The Neanderthal in My Family TreeNew genetic evidence shows our ancestors interbred with now-extinct species.
Why Are Our Brains So Ridiculously Big?Tool use and exploration may be just side effects of social skills.
What Is War Good for? Ask a Chimpanzee.What apes and monkeys can teach us about the roots of human aggression.
What Are You So Scared of? Saber-Toothed Cats, Snakes, and Carnivorous Kangaroos.The evolutionary legacy of having been prey.
Are Humans Monogamous or Polygamous?Archaeologists, anthropologists, and biologists agree: It’s complicated.