I hope Beijing are hearing this.
The study also found that Southern California’s air chemistry has changed for the better. The amount of organic nitrates in the atmosphere — which cause smog’s eye-stinging irritation — has drastically fallen off, according to federal researchers.
Ozone and other pollutants have been monitored in the state since the 1960s. Since then the population in Southern California has tripled, as has the number of cars on the road. Nevertheless, tailpipe emissions have decreased.
The National Oceanic and Atmospheric Administration’s Cooperative Institute for Research in Environmental Sciences at the University of Colorado led the research, which analyzed decades of data and collected air samples from overflights in 2010.
The researchers credited the state’s stringent emissions standards with bringing about the pollution…
View original post 113 more words