In their book "Unstoppable Global Warming: Every 1500 Years," Dr. S. Fred Singer, distinguished research professor at George Mason University, and Dennis T. Avery, senior fellow at the Hudson Institute, report on and substantiate research which establishes unequivocally that the earth's climate exhibits a natural warming and cooling cycle with a period averaging about 1500 years; that we are now in the warming half of one of those cycles; and that human activity accounts for a very small amount of this warming compared to natural effects.
Their arguments are based on the original Greenland ice core analyses of Dansgaard, Oeschger and Lorius which won those scientists the Tyler Prize (the "environmental Nobel"); these claims are further supported by numerous studies, many of them published in refereed journals, which are referenced in the book.
The authors offer a devastating critique of the flawed methodologies of the IPCC, especially their computer modeling, and the unwarranted, unsupported, and often hysterical predictions regarding rising sea levels, the increasing incidence of extreme weather events, and the deleterious effects of rising temperatures and CO2 concentrations on humans and the rest of the biosphere.
In addition to dealing in a rational way with the science of climate change, they explain why the US Senate did the right thing in refusing to ratify the Kyoto treaty.
Singer and Avery are to be commended for this contribution to the dialogue on climate change.