If we want to do anything about CO2 and pollution in the atmosphere, the low hanging fruit is China. Every country has stuff it can do, but China is on the 80% side of the 80/20 rule.
I wonder if there will ever be a war over something like this.
I live in Tokyo, which is obviously a lot closer to China than the Bay Area is, and here we have PM 2.5 pollution reports on the news a lot like the regular weather report. On the worst days I throw on a 3M respirator[1] before I ride my bike across town, which makes me look like a character from some kind of post-apocalypse video game.
I am glad to see articles like this, because hopefully hard numbers will provide a concrete basis for diplomatic/economic pressure to make it better.
Even if the Chinese leaders are willing to pursue economic growth even at the tremendous cost of making the air in Beijing[2] so bad that (rich) kids go to preschool in pressurized tents, I don't want to have to keep my kid indoors all the way across the Sea of Japan in Tokyo -- but on the worst days, we do (on the advice of the pediatrician).
(In that sense, I am selfishly glad it is reaching the US west coast -- because the US has a lot more leverage to influence China's behavior than does Japan.)
[1]: http://www.amazon.com/gp/product/B001NDN29O/ref=s9_qpp_gw_p6...
[2]: https://www.google.com/search?q=beijing+air&client=safari&rl...