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An Energy-Saving Air Conditioner

Keeping air cool in homes and offices this summer will be expensive--about 5 percent of the energy used in the United States each year goes to running air conditioners. But researchers at the U.S. National Renewable Energy Laboratory (NREL) in Golden, CO, have come up with a new air-conditioner design that they say will dramatically increase efficiency and eliminate gases that contribute to global warming.

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technologyreview.com
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