Elon Musk and the OpenAI boss have spent the last three weeks battling in court over Sam Altman’s company, in a trial that could mould the future of artificial intelligence.

The head of the CIA has made a historic visit to Havana for talks with senior officials as the country is gripped by blackouts caused a US oil blockade.

A woman who wrote a children’s book about coping with grief after her husband’s death has been sentenced to life without parole for his murder.

An addiction counsellor who delivered the ketamine doses to Matthew Perry that killed the Friends star has been sentenced to two years in prison.

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OpenAI boss Sam Altman has insisted he is an “honest and trustworthy businessperson”, as he rejected Elon Musk’s claim he moved to “steal” the company and turn it from a charity into a capitalist venture.

Brandon Clarke, a professional basketball player with the Memphis Grizzlies, has died at the age of 29.

The head of the US Food and Drug Administration (FDA) has resigned after weeks of public speculation and a mounting pressure campaign waged by allies of Donald Trump, pharmaceutical companies and anti-abortion groups.

Harvey Weinstein’s third rape retrial has ended in a mistrial after the jury said it was deadlocked.

The operator of a cargo ship that crashed into a bridge in the US, killing six people, has been charged over the incident, along with one of the firm’s key employees.