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In this edition: How getting ready for bed is hard-wired, how clothing dyes can be recycled, and what we can do about data bias in AI.

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– When mice are sleepy, they make a safe nest, and now researchers have discovered the brain wiring that controls this instinct both in mice and likely in ourselves.

– We talk to the people behind – an Imperial startup that uses a new chemical process to recover dyes and colours from waste textiles, vastly reducing the water and energy use of the industry. The team recent secured an H&M Foundation Global Change Award.

– We listen in to the Science Actually podcast as they chat data bias in AI – discussing questions including can we eliminate biases, how much should we blame big tech, and what can we do about the issue?