AI research finds 505 hazardous chemicals formed from vaping. 18-month old girl has hearing restored in new gene therapy trial. Why AstraZeneca has withdrawn its Covid vaccine. Has China sent a secret robot to the moon? Also in this episode:

• Study: AI chatbots that simulate the dead risk digitally haunting the bereaved
• DeepMind’s AI can ‘predict how all of life’s molecules interact with each other’
• Tiny wraparound implants ‘represent new approach for spinal cord injuries’

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