Thanks for posting this article Mike! I live in an area in San Francisco that is very polluted. I can relate to every word in this post. Many people have no idea how corrupted the City of San Francisco are. Many people from all over the world see beautiful pictures of San Francisco but a picture cannot show the reality of a place when the issue are micro-particles, acoustics, and noise. Unfortunately, our Public Transportation is acoustically corrupted since 1999. Our traffic is constantly taken by vehicles with altered exhaust. It wouldn't be if we did not have a corrupted public, a corrupted media and government that supports those that pollute. ...and yes! The pollution does affect our health and well-being! I would sue this corrupted City if I have the money but even our Justice are unquestionable in this area.