Extinction

A quarter of the world's sharks and rays are at risk of extinction, according to a new assessment by the International Union for Conservation of Nature (IUCN).

In the next 10 years, the tropics will undergo "unprecedented" climate change effects, long before the Arctic sees big shifts, according to an analysis of global warming trends published today.

A new European lineage of woolly mammoths has been discovered, broadening researchers' understanding of this enigmatic paleofauna.

Remains of conservation icon Lonesome George are prepared for display.

Many animals most vulnerable to climate change are not currently conservation priorities.

Can frog-watching save amphibians from disease?

A new map shows distinct species are not well protected under current plans.

The animals weighed as much as 44 pounds.

Pre-dinosaurs may have gotten an earlier start than previously believed.

The first Polynesian settlers caused nearly 1,000 flightless birds like the dodo to go extinct, new research suggests

New research yields more precise dates for this mega-extinction 200 million years ago.

Extinction rates lower than thought, study finds, though not everyone agrees.

A new study shoots down claims that disease also doomed Australia's extinct marsupial.

Famed British naturalist warns of population growth.

Lizards and snakes were not shielded from the Cretaceous doom.

Early "grave digger" mammal outlived its relatives.

Time for Recognition, Responsibility and Recovery