Explore how ancient sloths evolved in size, from small climbers to massive ground dwellers, shaped by shifting climates and ...

DENVER (AP) — The New York Yankees broke open a tight game with a 10-run fifth inning Saturday against the Colorado Rockies. Aaron Judge wasn’t even at the heart of it as the Rockies ...

A tropical red sun is setting over Caño Palma as we head out for our evening paddle in Costa Rica’s Tortuguero National Park. Vines loop across the tea-brown river, like a still from a Tarzan ...

Slow and sluggish: The secret to sloths' survival A new study suggests giant sloths were easily hunted, whereas small sloths hid in trees. 2 mins ...