Imagine a sloth. You probably picture a medium-sized, tree-dwelling creature hanging from a branch. Today's sloths—commonly ...

Researchers often rely on fossil teeth for clues about what extinct animals ate. Giant ground sloths’ teeth have been tricky to analyze, though – until now.

The extinction of the Pleistocene megafauna may be people’s fault after all, according to a recent study.

Imagine a sloth. You probably picture a medium-size, tree-dwelling creature hanging from a branch. Today's sloths - commonly featured on children's ...

Largely outshone by fossils of horses, the earliest camels are getting another look from scientists determined to sort out ...

Long before today's tree-dwelling sloths became icons of leisure, their ancestors roamed the ground as colossal herbivores.

If patience were a superpower, sloths would wear the crown. These famously slow-moving creatures spend their days dangling ...

Prioritizing which animals and plants to help is driven mostly by whether we like them or not. Some experts say that may not ...

India’s national parks offer a glimpse of its incredible biodiversity and endangered species. These protected areas are vital ...

McKayla Wood took this photo at Cummings Valley Elementary School of a California Gray Fox (Urocyon cinereoargenteus ...