[ROCKLOBSTER]

the recent rise in anthropogenic CO2 caused by burning of fossil fuels is quite unprecedented, so past CO2 changes give us little information. This hasn’t happened before, so we cannot know what the effects might be.

Nya...it's all carp!

There is virtually no CO2 in the atmosphere.

[palmer]

There is virtually no CO2 in the atmosphere.

It's the second strongest greenhouse gas. Ozone is the third strongest. All the rest are also-rans. The water vapor that does the bulk of the warming would not be possible without CO2. Take away CO2 and the air gets cold and dry and oceans freeze from pole to pole.