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"It's long been known that white roofs reflect more heat back into space, reducing the amount of electricity used for A/C and thus drastically cutting down on energy consumption. Some estimates say they save billions of"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.treehugger.com/corporate-responsibility/white-roofs-to-sweep-the-world-fight-climate-change.html>