Originally Posted by
Jer
Ok, so let's discount water vapor. By volume humans will then contribute under 6% or so. Massive compared to the .3% or so from before, but still much less than a majority. You are also ignoring the fact that water vapor makes up a *huge* part of the greenhouse effect. Depending on which studies you read, it is responsible for anywhere from 60% up to 95% of the greenhouse effect on its own.
I still do think, as I've said every time this damnable argument comes up, that it is important we do take measures to find new, clean, abundant, etc power sources and ways to prevent pollution. It doesn't help a whole lot if instead of baking to death, you walk out into a poisonous cloud every day. Smog sucks.