With UN funds being cut this month, conservationists call for last-ditch effort to save animal which clings on only in Iran.

Scientists have identified 2 million species of living things. No one knows how many more are out there, and tens of thousands may be vanishing before we have even had a chance to encounter them.

North Atlantic right whales, decimated by centuries of whaling, had staged a tentative comeback in recent decades. But the whales' recovery is now imperiled by collisions with ships and entanglement with fishing lines - threats that could be mitigated with long-overdue controls.

A new study renews fears that oil palm plantations could drive the legendary cats extinct.

Lack of sea ice is making it more difficult for polar bears to find food.