Every so often, a discovery comes along that changes our understanding of the distant past. In the vast landscapes of the ...

The sloth is the world's slowest mammal, so sedentary that algae grows on its furry coat. The plant gives it a greenish tint that is useful camouflage in the trees of its Central and South ...

Following is a transcript of the video. Narrator: If there's one thing you know about sloths, it's that they're, well, slow. But that doesn't mean they're boring. In fact, sloths are one of the ...

From sloth fetuses to vulture heads, the museum showcases the weird and wonderful medical collection of pioneering surgeon John Hunter. New Scientist had a unique preview of some of the many items ...

The Hoffman's two-toed sloth is one of the world's slowest mammals—so sedentary that algae grows on its furry coat. The plant gives it a greenish tint that is useful camouflage in the trees of ...

Classified as critically endangered and believed to have a rapidly declining population and habitat area, pygmy three-toed sloths (Bradypus pygmaeus) are native exclusively to the island of Escudo de ...