A votes yes, but i think it's an unfair question. Since the earth naturally warms and cools anyway, human CO2 is just another factor in the natural occurance (humas are apart of nature, despite our attempts to dominate it~) but I believe our industrializedness is speeding up the process and making it worse than it should be.
Whether or not it is our fault... it can't hurt to try and live a little more hippyish, try and break away from reliance on stuff that emits large amounts of carbon, and see what happens after that rather than completely reject the idea and continue burning our fossil fuels.
Lets all blame China for global warming, they're a coal nation.
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