<description>&lt;p&gt;At a conference in Mexico, one scientist’s outburst launches a global quest. &lt;/p&gt;&lt;p&gt;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. &lt;/p&gt;&lt;p&gt;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? &lt;/p&gt;&lt;p&gt;Producer: Ilan Goodman 
Sound Designer: Jon Nicholls 
Story Editor: John Yorke&lt;/p&gt;</description>

With an angry outburst at a conference, one scientist ignites a multi-decade quest.

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

17. The Golden Spike

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