ref. "Currently CO2 occupies only 1/10,000th more of the atmosphere than in 1750, Keeling & Whorf, et al. 2004"
Talk about lies, damn lies and statistics.
CO2 only occupies about 3/10000ths of the atmosphere in the first place. So an increase of 1/10000th constitues a 33% increase! Quite alarming if its true.