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Saturday, August 30, 2008 |
Saturday, August 30, 2008 |
Photo: Airplane Contrails Boost Global Warming, Study SuggestsSome scientists believe that contrails contribute to the greenhouse effect by trapping heat in Earth's atmosphere. A new study suggests that the effect may be lessened if airlines schedule fewer nighttime flights. Photograph courtesy U.S. National Weather Service
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ADVERTISEMENTNATIONAL GEOGRAPHIC'S PHOTO OF THE DAY |
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