Humans

Weapon systems run by artificial intelligence could become tools that humans can’t compete with.

A 55,000-year-old skull fragment found in an Israeli cave might mark one of the first areas where modern humans and Neanderthals met.

A 540 thousand year-old art object shows that prehistoric upright walkers may have had quite a bit more going on upstairs than people give them credit for.

In contests drawn from game theory, chimpanzee pairs consistently outperform humans in games that test memory and strategic thinking.

Visual illusions, such as the rabbit-duck (above), are fascinating because they remind us of the discrepancy between perception and reality. But our knowledge of such illusions has been largely limited to studying humans.

Personality traits have nothing to do with a preference for using left or right brain hemispheres, according to a new study from neuroscientists at the University of Utah.

When playing the Ultimatum Game, chimpanzees can figure out how to cooperate with their partners and share the rewards like humans do.