Giant Atmospheric Brown Cloud

From a NASA press release last week:

NASA scientists announced a giant, smoggy atmospheric brown cloud, which forms over South Asia and the Indian Ocean, has intercontinental reach. The scientists presented their findings today during the American Geophysical Union Fall meeting in San Francisco.


Giant Brown Cloud

Particles from airborne pollution, such as the "Giant Brown Cloud," can travel all around the globe. In April of 2001, NASA satellites saw a massive dust storm appear over China. The densest portion of the aerosol pollution traveled east over Japan, the Pacific Ocean, and, within a week, the United States. (NASA Photo)

Frankly, this is all new to me. Can anyone tell me why the mainstream media and the environmentalists haven't been telling the public about the Giant Brown Cloud? Maybe it's because they haven't figured out how to blame it on the United States yet.