The Power of Poop (start time: 5:41)  This potent byproduct of our digestive system holds the promise of being a big part of the solution to several public health and environmental challenges of our time, such as drinking water scarcity and degraded cropland. In this week’s show, How On Earth’s Susan Moran interviews Dr. Bryn Nelson, a science writer and former microbiologist. His debut book, called Flush: The Remarkable Science of an Unlikely Treasure, recently appeared in paperback.

Host/Producer: Susan Moran

Listen to the show here: