S. Fred Singer summarizes the points in The Great Global Warming Swindle in this brief article for the Independent Institute. For those with not enough time even for that, here is my executive summary of the executive summary:
2:15 pm on March 27, 2007 Email Stephen W. Carson
1. There is no proof at all that the current warming is caused by the rise of greenhouse gases from human activities…
…the best evidence we have supports natural causes—changes in cloudiness linked to regular variations in solar activity.
2. If the cause of warming is mostly natural, then there is little we can do about it.
3. Finally, no one can show that a warmer climate would produce negative impacts overall.