E.A. wrote:

The typical AGW-denier also dismisses the need for stronger
particulate pollution laws.

Negative.

Particulate and toxins are the legitimate concerns of EPA.

CO2 is not.

However, one should reflect that a large amount of
mercury in America comes from China's relatively
unscrubbed emissions but US pollution has dropped
markedly, thanx to the Clean Air Act legislation:

http://www.epa.gov/air/airtrends/ima...mparison70.jpg

And it's difficult to believe the trend for
mercury differs much from the trend for other pollutants.

Also, there is probably more mercury in the average
human's dental fillings than there is in the average trout.