A Little Known Fact

[Cavalier22]

Mt. St. Helens cast more Co2 into the atmosphere than all human activity in history.

[youandme]

here is another brain buster: plants produce oxygen 

[Hugo Chavez]

Mt. St. Helens cast more Co2 into the atmosphere than all human activity in history.

So actually that's Mt. St. Helens + other natural sources + man made Co2

Oh yea, stop posting Rush factoids

volcanism produces about 3% of the total CO2 with the other 97% coming from man-made sources.
http://volcano.und.edu/vwdocs/frequent_questions/grp6/question1375.html

annual volcanic production of CO2: 130-230 million metric tons
annual human production of CO2: 22 billion metric tons
therefore human production of CO2 is at least 100 times greater than volcanic production
It would take “17,000 additional volcanoes like Kilauea” to emit the amount of CO2 produced by human activities.
http://volcanoes.usgs.gov/Hazards/What/VolGas/volgas.html