Gorillas and chimpanzees, though sharing DNA and habitats, exhibit distinct characteristics. Gorillas, the largest primates, ...

A new study has provided fresh insights into how animals such as the woolly mammoth, musk ox and arctic fox evolved to ...

Cold-adapted animals started to evolve 2.6 million years ago when the permanent ice at the poles became more prevalent. There followed a time when the continental ice sheets expanded and contracted ...

A new fossil and DNA analysis traces how dozens of sloth species responded to climate shifts and humans. Just two small tree-dwelling sloths remain today.

A new Archaeopteryx fossil with soft tissue reveals flight features and offers fresh support for Darwin’s theory of evolution ...