Tech bosses Elon Musk and Sam Altman have backed a call from the head of Anthropic to have permanent third-party reviewers inside “frontier” AI companies.

A 15-year-old boy survived on top of an overturned boat in Alaska’s Bering Sea for around two days, having lost his older brother and then his cousin after the skiff capsized.

Police in Mississippi have arrested a man in connection with the death of a black woman found hanging from a tree last month.