Spring is a season of rebirth, a time when nature seems to wake up from the dead. Brown lawns flush green, bare branches bud and flower, and animals that seemed gone for good suddenly reappear.

A sweeping new study reveals that as Arctic permafrost thaws, it is dramatically reshaping rivers and releasing vast amounts ...

While 100,000 drivers barrel down Interstate 25 in Colorado each day, moose, mountain lions, elk, deer, bears and pronghorn ...

Snow leopards, wolves, and leopards coexist in the Himalayas by separating their diets, reducing conflict in shared habitats.

A young gray whale that stunned southwest Washington residents by swimming about 20 miles up the Willapa River this week has died, according to Cascadia Research Collective. In a Facebook update ...

Jonathan -- the world's oldest land animal -- lives! NPR's Scott Simon speaks with Joe Hollins, veterinarian of 194-year-old tortoise, and Nigel Phillips, governor of St. Helena, about a crypto hoax.