'Smart windows' have potential to keep heat out and save energy

Windows allow brilliant natural light to stream into homes and buildings. Along with light comes heat that, in warm weather, we often counter with energy-consuming air conditioning. Now scientists are developing a new kind of "smart window" that can block out heat when the outside temperatures rise. The advance, reported in ACS' journal Industrial & Engineering Chemistry Research, could one day help consumers better conserve energy on hot days and reduce electric bills.

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