Why the Latest Science Leads Us to a New Theory of Human Nature, by Jonathan Leaf (Bombardier, 320 pp., $21) Ever since Darwin, biologists have believed that much could be learned about human nature ...

Humans are far from the only primates engaging in same-sex sexual activity. A new study found instances in which 59 nonhuman primate species, including bonobos, chimpanzees and macaques, have taken ...

Durham, NC — What sets mankind's closest relatives — monkeys, apes, and other primates — apart from other animals? According to a new study, one answer is that primates are less susceptible to the ...

Shortly after an asteroid strike triggered a cataclysmic extinction event 66 million years ago, a group of mammals with a proclivity for climbing trees and eating fruit began to thrive. These ...