Melissa Clark's Pumpkin Recipes; Behind the Scenes at the Food Network; The Science of Soil; Please Explain: Food Poisoning

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Melissa Clark shares her ideas on what to do with pumpkins other than carving them! We'll find out how the Food Network went from struggling start-up to cultural staple over the last 20 years. Documentarian Deborah Koons Garcia and scientists Ignacio Chapela and Michael Hansen talk about the complexity and mystery of soilAnd, with another salmonella outbreak in the news, Please Explain is about the things that cause food poisoning.