Bill McKibben is one of the world's foremost environmentalists and experts on climate change and is a regular contributor to the New Yorker and the Guardian. He is also the author of several books on the climate crisis, including his watershed work The End of Nature. Bill joins Nic on this episode to talk about his recent project, Third Act, an organization of people over the age of 60 dedicated to fighting climate change, and the generational power of protest music. He also talks about the songs that bring him up when he's been writing about the ruinous effects of the fossil fuel industry all day, his love for Raphael Saadiq and Diana Ross, and why Questlove's Summer of Soul is the best music video he's ever seen.