We mark Earth Day 2023 with some of the most impressive minds working on climate change issues today. Joining us for the discussion: WAMC's Alan Chartock, Former EPA Regional Administrator Judith Enck, Award-winning author, activist, and educator Bill McKibben, Pulitzer Prize–winning author of "The Sixth Extinction," Elizabeth Kolbert, and contributing editor at Rolling Stone, where he has covered climate change for more than a decade, Jeff Goodell.