A guide to chimpanzee trekking in Uganda The 42-year-old chimpanzee lounges lazily on the branch, eyeing us congenially. Far from being bothered by our presence, he seems to be actively enjoying it, ...

According to a new study, chimpanzees, like humans, must contend with a confined bony birth canal when giving birth. In humans, the problem was exacerbated by our unique form of upright walking since ...

It's hard to tell when—and why—our ancestors got down from trees and started walking on two legs. Many early hominins capable of bipedal walking were also well-adapted for climbing, and we lack fossil ...

Forbes contributors publish independent expert analyses and insights. Jared Ranahan is a reporter who covers travel and ecotourism. While Louisiana is known for its high concentration of alligators ...