Claims that scientific opinion is nearly unanimous on the subject of global warming are wrong. The Oregon Institute of Science and Medicine received signatures* from over 17,100 basic and applied American scientists, two-thirds with advanced degrees, to a document saying, ‘There is no convincing scientific evidence that human release of carbon dioxide, methane, or other greenhouse gasses is causing or will, in the foreseeable future, cause catastrophic heating of the Earth’s atmosphere and disruption of the Earth’s climate.’ … There are many indications that carbon dioxide does not play a significant role in global warming.