Blue whales and beaked whales are disturbed by navy sonar, according to the first studies to measure the animals response to the sound.

More than 15,000 bat recordings in the Lake District help researchers produce the first detailed, large-scale species-specific bat distribution maps in a UK region.

Two patients have been taken off their HIV drugs after a bone marrow transplant seems to have cleared the virus from their bodies, doctors report.

The Earth experienced unprecedented recorded climate extremes during the decade 2001-2010, according to the World Meteorological Organisation.

The UK is to ban the herbal stimulant khat, going against the advice of its own drugs advisory body.

Scientists have described a new system for visualising "hidden" crime scene fingerprints.