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Fighting food waste is a key challenge issued to Call for Code entrants. (Getty Images) At a Glance The annual award was announced Tuesday night in New York City.GardenMate connects gardeners with excess produce to people who need it.Nearly 1 billion tons of food is wasted each year worldwide, according to the UN, including garden produce. An innovative app that connects gardeners with excess produce and people in need is winner of the 2022 Call for Code Global Challenge. The...