At least 1,000 species communicate by sound, and scientists are only beginning to discover the range of bizarre noise-making and listening techniques.

Scientists have discovered a new gene that makes mice happy, a finding that suggests another avenue of drugs for improving depression in humans.

A fossil of a leaf-imitating insect from 47 million years ago has a striking resemblance to modern mimickers.

When a white-handed gibbon spots a lurking leopard, rather than high tailing it in the opposite direction, the furry ape will actually draw closer to its foe and belt out a song.

If you are feeling trapped by this year's holiday rush, consider these air bubbles, locked into the ice of frozen O'Dell Lake in the high Cascade Mountains of Oregon, USA.