Climate Change: Countering the Contrarians

Scientific American talks evidence, digging into seven arguments against the reality of climate change that, if not the most frequently-cited in general, are certainly the most frequently cited in BoingBoing comment threads. Personally, I've started trying to avoid the snarky, dismissive tone this piece veers a bit into...I just don't think it helps anything to make the honest skeptics feel mocked. (The oil lobbyists, the anti-semetic conspiracy nuts, etc. can be easily and freely mocked on an individual basis.) But that aside, the article is worth reading. Good answers given for:

Scientific American: Seven Answers to Climate Contrarian Nonsense