Between the reports of E. coli-tainted spinach and Listeria-laden ice cream, it's easy to become paranoid about what to eat. And rightly so: One in six Americans will get a food-borne illness this year. But a number of new and soon-to-exist food-monitoring technologies can help keep your fridge contaminant-free, flag when something should be tossed, and tell you exactly what's on your plate.
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