Nasa enters the final stages of preparation for its last-ever shuttle mission, but the Florida weather looks likely to delay the Atlantis orbiter's launch.

A fossilised skull belonging to one of the largest sea monsters ever unearthed is unveiled to the public.

Pig-nosed turtle numbers halve as the unique reptile is harvested by indigenous people, report scientists.

Sex gives worms an advantage in the face of parasite invasion, a result that helps researchers explain why sex exists.

The space shuttle Atlantis launches from Florida on a 12-day mission, marking the beginning of the end for the space shuttle era.

Fertility doctors say they have found a new, non-invasive way to screen IVF embryos for genetic abnormalities.

Russian epilepsy medication is being increasingly used in the UK as a substitute for illegal drugs, scientists have warned.

The first solar park in Wales is expected to start converting sunlight into electricity later at the Rhosygilwen estate in Pembrokeshire.