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Disappearing Alps

The permafrost is thawing, the mountains are crumbling and the glaciers retreating. What will be left of the Alps? Peter Hadfield reports from Switzerland.

Producer: Alasdair Cross.

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30 minutes

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What has happened to the world's coral?

What has happened to the world's coral?

In 2016 reefs around the world the size of city blocks died. Here we explore why.

Podcast