OpenAI has signed a $38 billion (£29 billion) deal with Amazon.The seven-year partnership gives OpenAI access to Amazon Web Services. It’s the latest in a string of partnerships necessary to ensure what OpenAI CEO Sam Altman describes as the ‘massive, reliable compute’ needed to scale up AI.

Elsewhere, UK scientists have developed a gel that encourages teeth to regrow their own enamel - something long thought impossible. We speak to Professor Alvaro Mata, Chair in Biomedical Engineering & Biomaterials at the University of Nottingham, about how it works and why it’s a breakthrough for oral healthcare.

Also in this episode…

• Victims of ‘silent scandal’ pregnancy drug call for UK inquiry
• Study shows walking 5,000 steps a day could slow Alzheimer’s-linked brain decline
• Amazon rolls out UK’s largest fleet of electric lorries
• Are video game developers breaking the law by ‘switching off’ games people have purchased?
• The campaign calling on parents to get their kids moving this winter
• Can chimpanzees make rational decisions?

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