There is a wealth of informative and thought-provoking conversation out there. These are my favorites.
The Extraenvironmentalist. These two young men (both under 30, I think) interview an amazing assortment of authors, thinkers and doers from heavyweights like John Michael Greer and Morris Berman, to authors, academics and people out doing things that matter. If you only have time for one podcast, I recommend you listen here. Published at least once a month – sometimes two (and that’s nice)
C-Realm. KMO has been around a long time, and interviews a wide range of people on an even wider range of topics. Frequently topics concern environmentalism, problems with industrial society and philosophy. Mind stretching. Published weekly.