Paleontologists have uncovered an exceptionally complete skull of a massive bird that lived 45 million years ago. This ...

A new study has cast light on the extinction of many of Australia’s kangaroos, challenging beliefs that the world’s changing ...

Humans are causing enormous damage to the Earth, and about 1 million plant and animal species are now at risk of extinction.

It's difficult to know what birds "think" when they fly, but scientists in Australia and Canada are getting some remarkable ...

The thylacine, also known as the Tasmanian tiger or Tasmanian wolf, went extinct in the 20th century. Scientists can now ...