Joshua Andrew, 23, donated a kidney to his father David at the Royal Free Hospital in Hampstead after previously saving his life with a bone ...

Novelist Salman Rushdie described Tuesday the moment a knife-wielding attacker stormed on stage and attempted to kill him ...

The scale invariance in branch diameter dictates how much smaller a limb should be as it branches and how much investment a tree makes in a few thick branches versus many thin ones. Trees have evolved ...

The American Red Cross urges donors to give blood or platelets in February to help build up the blood supply after thousands of donations went uncollected last month.