In October, chemical engineer Will Tarpeh was awarded a 2025 MacArthur “Genius Grant” in recognition of his pioneering work to turn wastewater into a source of valuable materials. Will envisions a future in which the concept of wastewater is obsolete, thanks to advances in recycling. A couple of years ago, we sat down to talk with him about this work, and we hope you’ll take another listen today to learn more about the research Will is doing to transform the potential of wastewater into resources. Have a question for Russ? Send it our way in writing or via voice memo, and it might be featured on an upcoming episode. Please introduce yourself, let us know where you're listening from, and share your question. You can send questions to thefutureofeverything@stanford.edu. Episode Reference Links: Stanford Profile: William Abraham Tarpeh Connect With Us: Episode Transcripts >>> The Future of Everything Website Connect with Russ >>> Threads / Bluesky / Mastodon Connect with School of Engineering >>> Twitter/X / Instagram / LinkedIn / Facebook Chapters: (00:00:00) Introduction Russ Altman introduces Will Tarpeh, a professor of chemical engineering at Stanford University. (00:03:01) Wastewater as a Modern Mine How elements like nitrogen and phosphorus can be recovered from waste. (00:04:15) Path to Sanitation Research Will shares what led to his interest in studying wastewater. (00:06:55) The Science of Separation The electrochemical and material techniques to extract valuable compounds. (00:08:37) Urine-Based Fertilizer How human urine could meet up to 30% of global fertilizer needs. (00:11:08) Drugs in Wastewater The potential of reclaiming pharmaceuticals from waste streams. (00:14:14) Decentralized Sanitation Opportunities for neighborhood or household-scale treatment systems. (00:16:48) Source Separation Systems How dividing waste at the source improves recycling and recovery. (00:18:56) Global Sanitation Challenges Ways that developing countries can adopt modern waste solutions. (00:23:51) Preventing Algal Blooms The systems that are helping to reduce nutrient pollution and dead zones. (00:27:16) The Urine Summit A community advancing urine recycling and sustainable sanitation policy. (00:28:43) Conclusion Connect With Us: Episode Transcripts >>> The Future of Everything Website Connect with Russ >>> Threads / Bluesky / Mastodon Connect with School of Engineering >>> Twitter/X / Instagram / LinkedIn / Facebook Hosted by Simplecast, an AdsWizz company.