We’ve all heard about how food waste is a problem and there are a lot of apps that try to prevent leftovers from ending up in the trash. And do they really cut down on food waste? Iman Khanbai: Tamar studies how digital tools like apps affect people’s consumption and behavior, and how that impacts the environment. Sedi-Anne Blachford: To see how the rebound effect shows up in food sharing apps, Tamar and her team looked at hundreds of thousands of listings on a peer-to-peer food sharing app. Iman Khanbai: Afterall, food sharing apps can prevent food from ending up in landfills, and less food in the landfill helps reduce greenhouse gas emissions.