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We\\u2019ve teamed up with America\\u2019s Test Kitchen Kids to delve into the scrumptious science of cooking. You\\u2019ve sent in so many great cooking questions that we had to spread the answers over four episodes. This is our first installment: HEAT. What crazy chemical reactions does heat trigger in food? How do microwave ovens work -- and why can\\u2019t you put metal in them when they\\u2019re lined with metal? We\\u2019ll answer those questions, find out how feeding squirrels helped profoundly change how we prepare food and learn the recipe for a perfect grilled cheese sandwich. Plus: our Moment of Um tackles the question, \\u201cHow does coffee keep you awake?\\u201d

For more recipes and information for young chefs, head to americastestkitchen.com/kids to sign up for their newsletter. Brains On is sponsored today by Children\\u2019s Cancer Research Fund (ccrf.org/brainson) and KiwiCo (kiwico.com/brainson).