To study something as freewheeling, spontaneous, and variable as play, researchers had to get creative.
Officials are looking into whether the popular tourist attraction was involved in the wildlife trafficking after the discovery of 40 dead cubs.
The planet’s tallest animal is in far greater danger than people might think.
The story of Celia, the last bucardo in the world, and her short-lived clone
A changing climate could have driven the evolution of bizarre species with snouts five times longer than the rest of their skulls.
Humans talk to their babies in a very particular way—and so do dolphins.
Forget changing only the names that honor the horrors of the past. Some biologists now argue no species should ever be named after a single individual.
Jon T. Coleman, the author of Vicious, on the history of America's fraught relationship with its most storied predator
Six years ago, Michigan’s entire population of 9 million discovered it had been endangered by chemical contamination of livestock feed sold to farmers all over the state. The full dimensions of this agricultural disaster are now becoming evident, and at least 40 million people may be affected.