Global warming denial refutation

Overview
Due largely to the efforts of very powerful entities with an interest in maintaining the status quo in energy-production, i.e. the oil industry, there has been an ongoing and well-funded media campaign to discredit the idea of global warming and its implications. This has led to both a large number of easily-refutable objections being widely circulated and to many of the same long-refuted arguments being brought up again and again.

The definitive collection of responses so far appears to be Coby Beck's "How to Talk to a Global Warming Skeptic", linked in the Reference section below.

Reference

 * Global Warming & Climate Change Myths
 * How to Talk to a Global Warming Sceptic by Coby Beck: an excellent collection of skeptical arguments-and-responses
 * mirror with American spelling and somewhat better formatting, but articles are not listed all on the same page; may also be missing some articles.