Nicola Twilley, author of Frostbite, spoke with Latif Nasser about how refrigeration has changed the way we eat and think about food. Twilley spent over a decade researching how food is kept fresh from farm to table. The conversation explores the science of cold and how fruits have a secret to eternal youth. The podcast episode also discusses the unsung hero of the local grocery store, the salad bag. The episode was reported by Latif Nasser and Nicola Twilley, with production help from Maria Paz Gutierrez. The episode features original music and sound design by Jeremy Bloom. Fact-checking was done by Emily Krieger, and the episode was edited by Alex Neason. The episode cites two New Yorker articles and Twilley's book Frostbite. Radiolab is a podcast that is supported by listeners and foundations, and offers a newsletter and membership opportunities. The podcast can be followed on social media and listeners can share their thoughts by emailing [email protected].