University of Minnesota dining halls will be going trayless after a successful pilot on Earth Day in April. On that day, the removal of trays from the campus's six all-you-care-to-eat residential dining halls resulted in a 315 pound reduction in food waste, compared with a typical day when trays were available. The school will make the change permanently beginning this fall. Trayless dining has caught on at an increasing number of colleges and academies where all-you-care-to-eat policies ...

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