We speak to Colossal Biosciences about their Jurassic Park-style woolly mammoth de-extinction mission which has passed a technical milestone. Genetic brain ‘switch’ identified that can control anxiety. Space-tourists warned about cosmic radiation exposure. World's oceans reach record temperature. Also in this episode:

• Colossal's Eriona Hysolli and Professor George Church explain their stem cell breakthrough
• Space weather expert Chris Rees on why more warnings are needed about cosmic radiation
• Police to send drones as first responders to emergencies
• Scientists: February 2024 was warmest on record globally
• Bumblebees ‘teach others to solve puzzles that are too complex to learn alone’

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