Researchers have captured footage of these bears making a wide range of vocalizations during their most intimate moments—the first time sounds of this kind have been documented in any bear species.

Rachael Z. Miller, founder of the Vermont-based Rozalia Project for a Clean Ocean, conducts a tape test on various clothing ...

The best nature documentaries are the ultimate trip, minus the drugs. I'm talking about the kind of films that make you feel like you're sweating in the savanna, freezing in the Arctic, or staring ...

A new book explains much of what is known about these diverse animals, including pleasure and sex—as well as the downsides of ...