Most mammals wear coats of brown, black, and gray, while parrots flash brilliant reds, reef fish shimmer in electric blue, and chameleons shift between greens and golds. This disparity is not random.

Scientists may have been dramatically undercounting the number of vertebrate species on Earth. A large analysis of more than 300 studies suggests that for every recognized species of fish, bird, ...

A University of Arizona study finds scientists are discovering 16,000 new species annually - and DNA tools may reveal billions more.

According to the data considered by its authors—a team from the University of Sussex (UK) and Lund University ...

The gut microbiome research field has rapidly evolved, driven by new insights into the profound ways in which gut microbes affect metabolism, immune ...