For today's episode, I was joined by Dr. Peter Gleick, Cofounder and Senior Fellow at the Pacific Institute in Oakland, California, author of the new book, The Three Ages of Water, and member of the National Academy Sciences. He joined me to talk about a number of water-related topics, starting with a recent piece he wrote in the Kyiv Independent about the destruction of the Kakhovka Dam on the Dnieper River and the ensuing human and ecological tragedies. We also discussed his new book, which tells the fascinating story of human history and the way that it has always been deeply intertwined with the history of water on Earth.