[Kenny Bunk]

Those enviro-wackos can never understand that old Etna, Pinatubo, Mt. St. Helens, Mt. Erebus in Antarctica, and others can put out more "pollution" in a day than 350 years of industrialization.

It's as hard to explain to them as the precession of the Earth's spin, and changes in orbital progress around the Sun. There's a lot on Earth, like Global Warming and Cooling, with which we simply have nothing to do.

[cogitator]

Those enviro-wackos can never understand that old Etna, Pinatubo, Mt. St. Helens, Mt. Erebus in Antarctica, and others can put out more "pollution" in a day than 350 years of industrialization.

Depends on what kind of pollution you're talking about. Sulfur dioxide and ash, yes; carbon dioxide, no. SO2 emissions from volcanoes are on par with human emissions (primarily from coal burning) -- obviously they put out a lot of ash -- but they aren't a significant source of CO2.