Researchers in Alaska have discovered that beluga whales have lots of different partners and this “mate switching” could be vital for helping populations survive.

Sexual frequency is an unspoken contract in monogamy. When desire shifts, pain grows—until couples replace silent assumptions ...

A new study suggests humans belong in an elite “league of monogamy,” ranking closer to beavers and meerkats than to chimpanzees. By comparing full and half siblings across species and human cultures, ...

A new study shows penguins are breeding earlier than ever in the Antarctic Peninsula. This region is one of the fastest-warming areas of the world due to climate change, and penguins time their ...