20,000 scientists gave a catastrophic warning about the fate of humanity – and people are listening

A dire warning to the world about its future, which predicts catastrophe for humanity, is continuing to gain momentum. The letter – which was first released in November – has now been signed by around 20,000 scientists. And the world seems to be listening: it is now one of the most discussed pieces of scientific research ever, and its publishers claim it is now influencing policy.

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