Food is a huge climate problem. It’s responsible for somewhere between a quarter and a third of global greenhouse gas emissions, but it concerns a much smaller share of global climate policy. And what policy does exist is often … pretty bad.

On this week’s episode of Shift Key, Rob and Jesse talk with Michael Grunwald, the author of the new book We Are Eating the Earth. It’s a book about land as much as it’s a book about food — because no matter how much energy abundance we ultimately achieve, we’re stuck with the amount of land we’ve got.

Grunwald is a giant of climate journalism and a Heatmap contributor, and he has previously written books about the Florida everglades and the Obama recovery act. Shift Key is hosted by Jesse Jenkins, a professor of energy systems engineering at Princeton University, and Robinson Meyer, Heatmap’s executive editor.

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Preorder We Are Eating the Earth

The real war on coal, by Michael Grunwald

The Senate GOP’s seismic overhaul of clean energy tax credits

Music for Shift Key is by Adam Kromelow.

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