Grazing by farm animals can skew the sex ratio of bird chicks, researchers find - potentially affecting the species' prospects.

The California firm hoping to revolutionise space travel

A Royal Navy warship made from plastic rather than metal leaves Faslane on the Clyde for active service in the Gulf.

Children are able to remember memories from their very earliest years, but forget them as they mature.

Goats are able to recognise the voices of their own kids, differentiating them from other animals' offspring, according to researchers.

More than 2,000 insect fossils dating to the Jurassic period are found at the Museum of Somerset after being forgotten for more than 90 years.

The Crab Nebula - an exploded star remnant - has shocked astronomers by emitting an unprecedented blast of gamma rays, the highest-energy light in the Universe.

The operator of Japan's crisis-hit nuclear plant agrees to drastic restructuring in return for government help paying a huge compensation bill.