What if instead of talking about history from the perspective of humanity, we told it from the perspective of the resources that made human expansion possible? Sunil Amrith is a historian and author of The Burning Earth: An Environmental History of The Last 500 Years.

He sat down with Ash to explain how a bumper crop of grass powered the Mongol empire, how the two world wars irreversibly changed the planet, and to wonderif the global north can ever come to terms with the need to consume fewer resources.

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