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At a conference in Mexico, one scientist’s outburst launches a global quest.
Hannah Fry follows a group of researchers on the hunt for a ‘golden spike’: the boundary, marking a shift into a dramatic new geological period dominated, not by volcanoes and asteroids, but the influence of humans.
From plastics and concrete to nuclear fallout, the data they uncover reveals a planet profoundly changed. But can these scientists persuade their colleagues - and the world?
Producer: Ilan Goodman Sound Designer: Jon Nicholls Story Editor: John Yorke
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