Also known as the Polynesian tree snail or niho tree snail, the Partula snail (Partula nodosa) is actually one of several snail species of the genus—all of which are in danger of extinction.

The ivory-billed woodpecker recently went from near total obscurity to superstardom when birders reported a sighting of the believed-to-be-extinct species. The world's third largest woodpecker was ...

2008's first-ever comprehensive global assessment of these animals revealed that a third of reef-building corals are threatened. Perhaps one of the most striking elements of the present extinction ...