"Roger" wrote in message
k...


That snippet I posted from Wikipedia:

In the absence of the greenhouse effect, the Earth's average surface
temperature of 14 °C (57 °F) would be about -18 °C (-0.4 °F) [3]
[4](Black body temperature of the Earth). "

Suggests that CO2 is major player and one mankind is heavily influencing.

Where does it say, incorrectly, CO2 is causing the greenhouse effect?
Most of the greenhouse effect is due to water vapour and methane not CO2.
Ask a climatologist how much of the greenhouse effect is water and be
shocked by the answer.