It's currently 0.04% by volume or 0.06% by mass.
that 0.04% is All CO2 both man caused and nature caused- man’s contribution of CO2 amounts to just 3.4% of that .04% which = 0.00136%
As well, atmospheric physicist James A. Peden studied CO2 and it’s capabilities of absorbing heat and found:
“Man-made CO2 doesn’t appear physically capable of absorbing much more than two-thousandths of the radiated heat passing upward through the atmosphere,” Peden writes.
So, not only is man’s contribution of COP2 to the atmosphere extremely small, the small amount of CO2 isn’t even capable of absorbing hardly any of the heat being radiated upwards-
The claim that ‘Man is almost entirely responsible for climate change’ is a colossal lie- we’re not even responsible for a tiny fraction of the increase in heat- Even if we quadrupled our output of CO2 it still would be such a small amount of CO2 in atmosphere that it couldn’t possibly change temperatures on iota- There is no thick blanket of CO2 created by man preventing heat from escaping the earth- that is a lie