More than 31,000 scientists across the United States, including more than 9,000 Ph.D.s in fields including atmospheric science, climatology, Earth science, environment and dozens of other specialties, have signed a petition rejecting "global warming," the assumption that the human production of greenhouse gases is damaging Earth's climate.
"There is no convincing scientific evidence that human release of carbon dioxide, methane, or other greenhouse gases is causing or will, in the foreseeable future, cause catastrophic heating of the Earth's atmosphere and disruption of the Earth's climate," the petition states. "Moreover, there is substantial scientific evidence that increases in atmospheric carbon dioxide produce many beneficial effects upon the natural plant and animal environments of the Earth."
The Petition Project actually was launched nearly 10 years ago, when the first few thousand signatures were assembled. Then between 1999 and 2007, the list of signatures grew gradually without any special effort or campaign.