Man can't change climate, only God can
boingboing.net
boingboing.net
Just because climate change has happened in the ancient past without human intervention doesn't mean we can't be the cause of it now. All of that carbon that was sequestered underground for millions of years is now being injected into the atmosphere - how can you believe it won't have an impact?
For one, that's not how science works. Science isn't about belief, it's about proof.
Two, because you're not considering the scale of the issue. You're so focused on the absolute tons of CO2 humans produce that you've completely discounted how much is naturally produced.
If you want to think about global warming more scientifically (skeptically), I suggest a site like http://www.nipccreport.org.
I picked CO2 as but one of many changes humanity has wreaked upon the earth. The list is of course vastly longer than just that.