Quirky Science - Episode 7 9

Canned food began with Napoleon's contest to preserve food, won by Appert's boiled, sealed bottles. The British later developed metal cans, though early ones exploded or caused illness. Can openers came 30 years later. Pasteur's germ theory explained spoilage. Pressure-cooking improved taste, and now, 'raddaperization'?zapping food?is the future. Canning evolved from battlefield necessity to high-tech preservation.