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b'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.\\nLearn more about your ad choices. Visit podcastchoices.com/adchoices'