Oh no, not another global warming thread!!! :surprised But seriously, I read that CO2 accounts for ~20% of the greenhouse effect on Earth, we are undoubtedly raising the amount of this (and other) greenhouse gases in the atmosphere. The greenhouse effect is very important in determining the lower atmosphere temperature, right? So isn't it a logical conclusion to draw that by increasing CO2 we will increase the greenhouse effect, and thereby increase the temperature of the lower atmosphere? I put it to you that global warming is not a "myth", (I don't care if someone misinterpreted past records, I'm looking forward now,) the greenhouse effect is real and it is contributing to (if not driving) global warming. Right?