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Jul 15, 2014, 7:10 am57 ptsGrist
Tucked in a grassy ridge cutting across the Small Family CSA Farm in La Farge, Wis., is a refrigerator so efficient it requires not a single watt of electricity, yet it can keep some crops chilly for months. It’s not some high-tech, Swedish-designed, solar-powered cooling unit. Just a good old-fashioned root…
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