The 10 most improved rivers in England and Wales, including the Thames, the River Taff and the Mersey Basin, are listed by the Environment Agency.

Bedbugs prevent sexually transmitted infections by doping their ejaculates with bacteria-busting proteins, report researchers.

International ocean drilling projects on earthquakes, climate and seabed life are put at risk as the US science agency pleads poverty.

Avian flu shows signs of a resurgence, while a mutant strain - able to sidestep vaccines - could be spreading in Asia, the United Nations warns.

A Glasgow-based company has installed its first commercial "alkaline hydrolysis" unit in a funeral home in Florida.

Great white sharks could be "occasional vagrant visitors" to waters around the British Isles, according to an expert.

A cave considered to have the finest stalactite formations in Scotland is being kept a secret by the potholers who found it.