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It is well known that the paving over of urban areas and the clearing of forests can contribute to local warming by decreasing local evaporative cooling. Scientists have long debated about the impact on global climate of water evaporated from vegetation. New research concludes that evaporated water helps cool Earth as a whole, not just the local area of evaporation, demonstrating that evaporation of water from trees and lakes could have a cooling effect on the entire atmosphere. [Source: ScienceDaily]
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