NASA Study Quantifies Vast Amount of Dust Reaching North America

Yale Environment 360: A new NASA study calculates that nearly 64 million tons of dust, pollution, and other tiny particles enter the atmosphere above North America from other continents each year, nearly as much as the 69 million tons of aerosols produced domestically through natural processes and human activities. The vast majority of the particles entering the atmosphere, scientists say, consist of natural dust and not pollutants. In a first-of-its-kind study, NASA researchers used satellite data and wind speed estimates......

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