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.

Mentioned:

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

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Music for Shift Key is by Adam Kromelow.

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If You Care About Food, You Have to Care About Land

Shift Key with Robinson Meyer

If You Care About Food, You Have to Care About Land