Virgin Galactic's first commercial spaceflight

The 90-minute flight to host microgravity experiments. Scientists baffled by planet discovery. The MS breakthrough that could lead to new treatments. Are octopuses capable of dreaming? In this episode:

• Professor Stephen Sawcer, Cambridge University, explains MS gene breakthrough
• ‘Secret of the universe’ gravitational waves seen for first time
• 140 major brands are paying for ads that end up on unreliable AI-written sites
• Researchers developing AI tool that could speed up dementia diagnosis
• Smart gloves ‘could allow stroke patients to relearn to play the piano’

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