If CO2 Created a Distinctive Orange Haze....

Here's an interesting comment on a Christian Science Monitor article about Rio+20:

Alec Sevins:
"I bet that if catalytic converters, smokestack scrubbers and other emissions controls had been technically impossible to invent, today's AGW-deniers would have been "smog deniers." Smog has, of course, not been entirely controlled, but you don't see people claiming that cars and industry don't cause smog. It's just too obvious. Photo-chemical smog can start out as clear emissions, but most Republicans don't waste time denying its cause and effect.

"CO2, however, is a clear gas with atmospherically-invisible, slow-moving impacts, so deniers have some elbow room to be devious. It's proven difficult if not impossible to prevent CO2 from drifting skyward, so fossil-fuel addicts and profiteers grab the chance to deny or downplay CO2's heat-trapping properties, and they show no sign of stopping. If CO2 created a distinctive orange haze they'd be far less brazen in their lies."