See when and where our ancestors may have interbred with Neanderthals and Denisovans.

Researchers say the skull belongs to an Australopithecus species once thought to be a predecessor to “Lucy,” but now that relationship is murky.

Mutating a gene called CMAH in mice so it’s nonfunctional, as in humans, upped the animals’ chances of developing heart disease, a study finds.

Bonobos eat their aquatic greens, perhaps to get their daily dose of iodine.

Thicker calluses don’t dull sensitivity in feet.

Sequences from dozens of ancient remains from Siberia reveal the closest ancient relative of Native Americans found outside of North America.

In long-distance, physically taxing events, the amount of energy athletes can expend appears to peak at about 2.5 times their metabolic resting rate—a maximum likely dictated by how many calories they can digest.

Fossil records show that the most recent shared ancestor with modern humans may have lived at least 800,000 years ago.

A mandible dating to 160,000 years ago is the first evidence of Denisovan hominins outside the Russian cave where they were first discovered in 2010.