In a significant but controversial final action, the Environmental Protection Agency (EPA) on Dec. 7 retained its existing National Ambient Air Quality Standards (NAAQS) for both fine and coarse particulate…
particulate matter
Citing new technical information gleaned from a more modern modeling analysis, the Environmental Protection Agency (EPA) has proposed to withdraw a federal implementation plan (FIP) to control regional haze from…
The world's power sector last year emitted a third of global sulfur dioxide (SO2) emissions, 14% of nitrogen oxides (NOx), and 5% of total particulate emissions (PM2.5), but those emission…