More than half of Minneapolis schoolchildren live in “food deserts,” regions of the city where impoverished families get most of their food from the likes of Super America. Half of the kids who eat school lunch come from communities like these; they get some 40 percent of their calories at school.

One-third of American children are now obese or overweight. Unless something is done, this generation of children is the first that is likely, on average, to be less healthy and live shorter lives than their parents.

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