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

Sloths weren't always slow-moving, furry tree-dwellers. Their prehistoric ancestors were huge — up to 4 tons (3.6 metric tons) — and when startled, they brandished immense claws. Video above: ...

Sloths, sharks, rays, and okapi gained stronger CITES protections at CoP20, with new Appendix I and II listings.

Sloths weren’t always slow-moving, furry tree-dwellers. Their prehistoric ancestors were huge – up to 4 tons – and when startled, they brandished immense claws. For a long time, scientists believed ...

It may be hard to imagine a time when giant mastodons and other long-extinct animals were roaming the prairies of South ...

Pigs, rats, cats and mongooses, all brought to the island decades earlier by humans, were to blame for their demise, preying ...

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

If you’ve seen any of the “Ice Age” animated Disney movies, we have some bad news: You don’t know the real ice age.

In Colombia’s enormous Magdalena River basin, an ecological anomaly has triggered an extraordinary debate among ecologists.

The two-week Convention on International Trade in Endangered Species of Wild Fauna and Flora is scheduled to run through Friday in Samarkand, Uzbekistan. Several proposals related to the pet trade ...

America's culinary heritage has been heavily influenced by other cuisines, so it's not especially easy to define exactly what ...