Jon welcomes two heavyweights of the environmental movement: filmmaker Josh Fox and Sandra Steingraber. Fox has made Gasland, Garland Part 2 about the dangers of and fight to stop fracking and also How to Let Go of the World and Love All the Things Climate Can't Change. He's now working on a live one man show. Sandra Steingraber Ph.D. is a biologist, author, and cancer survivor who writes about climate change, ecology, and the links between human health and the environment and is the subject of a new documentary called Unfractured