This podcast episode explores the topic of food expiration dates and how to tell when food has gone bad. The hosts discuss the science behind expiration dates, including bacteria and fungi that cause food spoilage. They also talk about the various ways to determine if food has gone bad, such as using our senses, looking for signs like mold or changes in color and texture, and using the smell test. The episode also touches on the history and significance of expiration dates and emphasizes the importance of food safety. The hosts engage with their young audience by featuring their contributions and promoting creativity. Overall, this episode provides valuable information on understanding and identifying food spoilage.