Maddie pays a visit to a mother-daughter team of Somali chefs in Oakland, California. Before arriving in the United States, Halimo and Fatuma lived in the largest refugee camp in the world, in Kenya. There, they used UN rations to concoct Somali delicacies, including the paper-thin pancakes that they teach Maddie to make. Then, Tom talks with science writer Ed Yong about the trillions of bugs living inside our bodies, and why there’s no such thing as “good” and “bad” bacteria.