From Alex Epstein: “10 years ago, I recorded what is still my favorite Earth Day Power Hour with philosopher Onkar Ghate, a long-time mentor of mine. Before we recorded the episode, Onkar suggested to me that we take a positive approach, explaining how much better human beings have made the Earth. That suggestion, and much of what we discussed in that episode, has affected my thinking ever since. "This best-of-episode features a new intro by Alex, including an update on Fossil Future.