A woolly rhino fossil dug up on the Tibetan Plateau is believed to be the oldest specimen of its kind yet found.

The government is considering closing laboratories at eight Defra veterinary centres, a union says.

The number of people infected in US medical experiments in Guatemala on STDs during the 1940s could be 2,500, health authorities say.

US scientists warn Nasa that so-called space junk has reached a critical level, threatening spaceships and valuable satellites.

Britain's loudest bird, the bittern, has enjoyed its best year on record in England with breeding males now topping 100 for the first time since 1911, conservationists say.

Fat cells in the skin have been identified as the source of chemicals needed to make hair grow, US researchers say.

A group of sand lizards - one of Britain's rarest reptiles - are being released back into the wild in Ynyslas near Aberystwyth.

A gamekeepers association raises concerns about whether sea eagles would be able to differentiate between children and natural prey.