GREEN
05/23/2010 05:12 am ET | Updated May 25, 2011

Scientists Reuse Cooking Oil To Insulate Roofs

Scientists just announced that they've found a great new use for used cooking oil -- and it doesn't have anything to do with a VW bus. They've figured out how to turn the waste from your favorite greasy foods into a "bio-coating" for roofs that regulates temperature in hot and cold weather.

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