Elon Musk announces artificial intelligence will being integrate into social network X using a conversational bot called Grok, with software inspired by Hitchhiker’s Guide to the Galaxy. Nasa's Bennu asteroid display at Smithsonian. Survey of coastal cities at sinking risk from rising sea levels. These steps ‘slow ageing by six years’.

Also in this episode:

• Could Star Wars tractor beams solve space junk?
• Why flu’s easier to treat than cancer
• Covid-style lateral flow test fights brain tumours
• Bank’s chatbot answers: Can I speak to the (AI) manager? 

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