Primates are facing an extinction crisis, according to researchers who have found that 60% of species are under threat.Read more
Science reporter, BBC News
A report says that 60% of the world's primate species are under threat of extinction.
By studying the long lives of killer whale families, researchers say they have solved the evolutionary mystery of the menopause.
Critically endangered chimpanzees craft absorbent drinking sticks, remote cameras reveal.