In 2007, Jill Pruetz first reported savanna chimps at her research site in Fongoli, Senegal, were using tools to hunt prey.

It’s a mystery why male chimps kill other adults, but a new study suggests the behavior may have little to do with human activities.

Reality TV has a way of highlighting the worst in people, even when they genuinely think they’re doing their best. “American Idol” is just one example, in which contestants who can’t carry a tune are shocked when told they can’t sing.

A new study finds children get more sleep, do better in school, behave better, and see other health benefits when parents limit content and the amount of time their children spend on the computer or in front of the TV.