It's amazing how much of this is getting to the West Coast of the US. By one measure 29% of SF's air pollution originates in Asia. http://pubs.acs.org/cen/new

It's amazing how much of this is getting to the West Coast of the US. By one measure 29% of SF's air pollution originates in Asia. http://pubs.acs.org/cen/news/88/i46/8846news3.html?T+Online+News http://pubs.acs.org/cen/news/88/i46/8846news3.html?T+Online+...