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Love motels and gridlocked talks: all the news from Cop16

Biodiversity correspondent Phoebe Weston takes Madeleine Finlay through the news from the UN Cop16 biodiversity summit in Cali, Colombia. Countries are wrangling over funding to protect nature and who should profit from the natural resources of the world’s least developed nations. Help support our independent journalism at theguardian.com/sciencepod

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  ‘Soft and calorie dense’: Chris van Tulleken on how ultra-processed foods …

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  Is our model of the universe wrong?

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  Does Google’s ‘mindboggling’ new chip bring quantum computers any closer?

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  The science of laughing

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  Revisited: Secrets of the gut microbiome

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  What really helps with hangovers?

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  What’s going on with fluoride?

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  ‘Travesty of justice’: Cop29’s controversial deal

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  The science behind yo-yo diets, bird flu news and which Brits can spot a f…

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  What does it take to become an astronaut?

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  Secrets of happiness: the happiness hacks backed up by science

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  Secrets of happiness: what makes a country happy?

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  What will Trump 2.0 mean for science?

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  Could we really live on Mars?

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  The US tech startup promising smarter babies