Shawn, you mean well, but you are burying yourself: The one legitimate reference you cite about volcanos vs. meteor impact reinforces the need to be careful about greenhouse gases.
Exactly. A volcano spews an unbelievable amount of pollution into our atmosphere and
this is added to the pollution that humans create.
shawn, here is an excerpt from the U.S Geological Survey website:
Volcanic Gases and Their Effects
"The [volcano's] sulfate aerosols also accelerated chemical reactions that,
together with the increased stratospheric chlorine levels from human-made chlorofluorocarbon (CFC) pollution, destroyed ozone and led to some of the lowest ozone levels ever observed in the atmosphere".
also from the U.S Geological Surve website:
Comparison of CO2 emissions from volcanoes vs. human activities
"Scientists have calculated that
volcanoes emit between about 130-230 million tonnes (145-255 million tons) of CO2 into the atmosphere every year (Gerlach, 1999, 1991). This estimate includes both subaerial and submarine volcanoes, about in equal amounts.
Emissions of CO2 by human activities, including fossil fuel burning, cement production, and gas flaring, amount to about 27 billion tonnes per year (30 billion tons) [ ( Marland, et al., 2006) - The reference gives the amount of released carbon (C), rather than CO2, through 2003.].
Human activities release more than 130 times the amount of CO2 emitted by volcanoes--the equivalent of more than 8,000 additional volcanoes like Kilauea (Kilauea emits about 3.3 million tonnes/year)! (Gerlach et. al., 2002)"
So, are we scared yet?
(I know SG, I know... they want us to be scared.)