TED Radio Hour The hidden forces shaping your choices
47 snips
Apr 10, 2026 
Michele Gelfand, a cross-cultural psychologist who studies tight and loose norms. Deb Chachra, an engineering professor focused on resilient infrastructure. Sarah Lake, a food-systems leader shifting diets toward plant-rich options. They explore how culture, infrastructure, and marketing invisibly steer what we eat, how we move and where power and resilience succeed or fail. Short, vivid takes on design and social forces.
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How Meat Became The Default American Meal
- Meat became a daily norm in the U.S. due to postwar subsidies, scaling farms, refrigeration, and the National School Lunch Program requiring protein.
- Sarah Lake traces the cultural shift to industry marketing and government policy that made meat cheap and ubiquitous.
Make Plant Foods The Default Option
- Do make plant-rich foods the default and affordable option in institutions and stores to shift diets at scale.
- Sarah Lake highlights Lidl placing plant-based next to meat at equal price, which raised plant-based sales 30% in six months.
Infrastructure Is Invisible Until It Fails
- Infrastructure is invisible until it breaks and is now stressed by climate change, requiring redesign and decarbonization.
- Deb Chachra argues renewable tech and research create real pathways to rebuild resilient, equitable systems.