Discover the top animals that live in trees and their unique adaptations. Learn interesting facts about arboreal species like ...

Huge tunnels under southern Brazil and northern Argentina were potentially made by giant, Ice Age sloths for refuge and rest ...

Bear claws are unique among the keratin-based appendages. Discover their uses, characteristics, and impressive strength.

A new road being built led to the bones of two giant ground sloths being discovered in Wilmington, launching them into local ...

Beneath the rolling hills of southern Brazil and northern Argentina, an extraordinary discovery has stunned scientists: giant ...

Massive underground tunnels discovered across South America are not human-made. Scientists now believe extinct giant ground ...

Sloths weren’t always sleepy tree-dwellers. In the Ice Age, they grew to the size of elephants and defended themselves with ...

Andrew Miller, co-editor-in-chief: Delivery robots are a stain on humanity and a chimera of our worst tendencies. Valuable ...

Honey badgers are not actually named for their love of honey, in fact, they raid bee hives to loot the delicious, ...

International research and highly-specialized divers are bringing an underground, underwater world to the surface ...

Natural predators aren't just fearsome hunters. They are ecosystem architects that sculpt wild landscapes, influence ...

Beneath a tree where a sloth sleeps, juvenile caimans lurk in the long grasses. The air is thick with the sound of an ...