[TomasUSMC]

So the CO2 that is man made is 3.5percent of 3.4 ten thousandths ?

Damn what number is that? A whole lot of zeros to the left of the decimal point?

[palmer]

The percentage of greenhouse effect attributable to human CO2 might be 1.5% or so. The numbers are very rough and I have them here: Myth: Only 0.28% of the "greenhouse effect" is human The bottom line is that the increase makes a difference but does not make a catastrophic (polar icecaps melt) kind of difference. Nor will anything we agree to in Europe make any difference to that 1.5% (or whatever it is), it will probably change it to 1.499%