The Greens down in New Zealand have posted an excellent article which refutes most of the arguments that climate change deniers have ever brought up.  It is a great summary and well worth reading.
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Rather than reproduce part of their article here and make you then follow a link to read the rest, let’s just push you right through the link here, eh?
Link to the New Zealand Greens answers article here:Â 
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To be fair, this material was collected by Coby Beck, a Canadian, and hosted by Grist, an American website. But it is good stuff…
http://www.grist.org/article/series/skeptics/