03 Aug '12, 1pm

64 million tons of dust, pollution, and other particles enter N. America atmosphere from elsewhere annually, @NASA says

03 Aug 2012: NASA Study Quantifies Vast Amount of Dust Reaching North America 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 The Long Strange Journey Of Earth’s Traveling Microbes Airborne microbes can travel thousands of miles and high into the stratosphere. Now scientists are beginning to understand the possible role of these microbes in creating clouds, causing rain, spreading disease, and even changing climate. READ THE e360 REPORT 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 ...

Full article: http://e360.yale.edu/digest/nasa_study_quantifies__vast_a...

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