Two chimpanzees meeting with each other apparently have a discussion using hand gestures, one of the human-like characteristics of other mammals. (Getty Images) Of the 8.7 million species on Earth, ...

People of all ages rely on their pets for a serotonin boost, whether they’re throwing a ball for their dog, petting their cat or talking to their fish after a long day. Nancy Edwards, professor and ...

Of the 8.7 million species on Earth, why are human beings the only one that paints self-portraits, walks on the Moon and ...

Some say the oldest known human settlement is Uruk, in modern-day Iraq. Others say Jericho, in Palestine. Wherever it is, it must be the place where synurbization—the process of wildlife adapting to ...