Many of us are worried (or at least we should be) about the impacts of globalization, pollution, and biotechnology on our diets. Whether it's monoculture crops, hormone-fed beef, or high-fructose corn syrup, industrially-produced foods have troubling consequences for us and the planet. But as culinary diversity diminishes, many people are looking to a surprising place to safeguard the future: into the past. The Lost Supper explores an idea that is quickly spreading among restaurateurs, food producers, scientists, and gastronomes around the world: that the key to healthy and sustainable eating lies not in looking forward, but in looking back to the foods that have sustained us through our half-million-year existence as a species.