Frank A. Von Hippel is an expert in ecotoxicology: the study of how pollutants impact human health and the environment at large. A professor at Northern Arizona University, Von Hippel is the author of The Chemical Age: How Chemists Fought Famine and Disease, Killed Millions, and Changed Our Relationship with the Earth, and the host of The Science History Podcast. Learn more about your ad choices. Visit podcastchoices.com/adchoices

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“What did the council decide on item 42?” — answered with the speaker and the moment.