Saul Griffith knows the US energy system better than just about anyone on this planet. He’s an inventor, a MacArthur genius fellow, and the founder and CEO of Otherlab, where his team was contracted by the Department of Energy to track and visualize the entirety of America’s energy flows. I had Griffith on The Ezra Klein Show last year for our climate series to lay out what it would look like for America to decarbonize. It was an awesome episode, but it was just a start.

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