Film of a mandrill cleaning its toenails with a stick is evidence of the animal's ability to modify tools, say scientists.

Better regulation is needed to govern rapidly expanding research in animals containing human tissue or genes, according to the Academy of Medical Sciences.

A punishing heatwave settles over the central and eastern US and Canada, with temperatures as high as 37C (99F) causing up to 22 deaths.

The giant asteroid Vesta reveals more of itself to the Dawn probe, which will soon return colour images.

Nasa's next Mars rover will be aimed at one of the Red Planet's deepest depressions - Gale Crater.

Two pilot whales are believed to be stranded and up to 15 are caught in shallow water at Kyle of Durness in the Highlands,