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

The DNA of a whale shows its father was a beluga and its mother was a narwhal.

Dogs have stronger facial muscles compared to wolves, giving them the sad or “puppy dog eyes” look.

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.

The fossil record for the ancient hominin A. sediba is younger than that of Homo, a “highly unlikely” scenario for a direct lineage.

The silver spinyfin has an extraordinary diversity of rod photopigments, which researchers propose may allow it to see color in the deep, dark sea.

Paleontologists find a fossil of a dinosaur, Ambopteryx longibrachium, with membranous wings, in China.

Fossils of two dinosaur skeletons found in New Mexico are from a species new to science that lived 92 million years ago.