Supermarket is saving $80 million a year just by putting doors on its refrigerators By Sarah Miller, grist.org You know how when you were a teenager (or a 20-something living on your parents’ couch) and you stood around with the refrigerator door hanging open, and your mom would be all “hey, I’m not paying to … Continue reading Supermarket is saving $80 million a year just by putting doors on its refrigerators

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