People feel less pain after a good belly laugh, most likely because of the release of naturally-occuring endorphins, research suggests.

A fossil housed for 50 years in a Polish institute is the first dinosaur skeleton preserved with its own footprints, say scientists.

The Woodland Trust is to plant six million trees and create hundreds of new woodlands to commemorate the Diamond Jubilee next year.

The future well-being of the UK's oak trees could be at a crossroads, the British Ecological Society meeting hears.

A man from Bristol who accidentally cut off his thumb has his big toe attached in its place.

Teachers in England may be using health and safety concerns as an excuse for not organising practical experiments and trips, a committee of MPs warns.

US government scientists who infected thousands of Guatemalans with STDs in the 1940s breached medical ethics, the official inquiry concludes.

The US space agency and Alliant Techsystems sign an agreement to push forward the company's Liberty rocket to launch astronauts into orbit.