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If You Drop It, Should You Eat It? Scientists Weigh In on the 5-Second Rule

High-school student Jillian Clarke investigated the scientific validity of the “5-second rule” during her apprenticeship in Hans Blaschek’s University of Illinois lab this summer. You know the rule: If food falls to the floor and it’s in contact with the floor for fewer than 5 seconds, it’s safe to pick it up and eat it. –If You Drop It, Should You Eat It? Scientists Weigh In on the 5-Second Rule…