It's also possible that air pollution policies for non ‑ greenhouse gas pollutants, the emissions of some of which are highly correlated with CO2 emissions, may play an important role. (robertstavinsblog.org)
The new package is the culmination of a two year process to review and improve existing air pollution policies. (iiasa.ac.at)
Dunn claims that he has also been a «student of air pollution policy making for almost 20 years.» (americafirstenergyconference.com)