31-Thousand Scientists Disagree

Despite what we've been told by Al Gore and the other leaders of the climate-industrial complex, the science is not settled. Tens of thousands of independent scientists do not support the view that human-generated CO2 is warming the planet.

The Global Warming Petition Project set out to demonstrate that the claim of “settled science” and an overwhelming “consensus” in favor of the hypothesis of human-caused global warming and consequent climatological damage is wrong. No such consensus or settled science exists.

31,478 American scientists have signed this petition, including 9,029 with PhDs.
These scientists are convinced that the human-caused global warming hypothesis is without scientific validity and that government action on the basis of this hypothesis would unnecessarily and counterproductively damage both human prosperity and the natural environment of the Earth.

That's powerful. And stirs rebuttal from the other side. The Sierra Club says the petition is a hoax and quotes the Union Of Concerned Scientists. But 31-thousand scientists is not a hoax. And there appears to be no reference to the petition on the Union Of Concerned Scientists' website. Could that be because the number of signatures has been climbing?