TED Health A future without food poisoning? with Emma Bryce and Nicola Twilley
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Mar 24, 2026 
Nicola Twilley, a food writer exploring refrigeration's global impacts, and Emma Bryce, a microbiology researcher who explains food-safety risks. They dive into Salmonella’s path from farm to fork and whether cookie dough is risky. They also trace the fridge’s role in reshaping diets, the cold chain’s environmental costs, and low-emission alternatives.
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How One Egg Sparked A Massive Salmonella Outbreak
- Salmonella from a single Iowa egg outbreak in 2010 sickened thousands and led to millions of eggs recalled.
- Emma Bryce traces how Salmonella survives stomach acid, uses a syringe-like system to invade intestinal cells, and causes inflammation and diarrhea.
Avoid Raw Cookie Dough And Cook Eggs Thoroughly
- Avoid raw cookie dough because both raw eggs and flour can carry Salmonella.
- Emma Bryce explicitly recommends handwashing, avoiding unpasteurized milk, and fully cooking meat and eggs to reduce risk.
Your Fridge Is The Tip Of A Global Cold Chain
- The domestic fridge is just the visible end of a global cold chain that preserves nearly three quarters of what we eat.
- Nicola Twilley calls this vast network an artificial cryosphere made of warehouses, trucks, containers, and supermarket cabinets.