Researchers have found new clues about the deadly white-nose syndrome, a disease that has wiped out millions of bats in North America.

In the first of five games between the world champion of Go and Google's artificial intelligence (AI), machine beat man by a narrow margin.

Eating raw meat and making stone tools may be behind the smaller teeth and faces of humans compared with their ancient relatives.

A pioneering procedure to heal the eye has been described as one of the "finest achievements" in regenerative medicine.