Which of the following statements comes closest to your view of global warming? Global warming is a proven fact and is mostly caused by emissions from cars and industrial facilities such as power plants and factories; Global warming is a proven fact and is mostly caused by natural changes that have nothing to do with emissions from cars and industrial facilities; or Global warming is a theory that has not yet been proven.”
|Fact: Cars, Industry||54%|
|Fact: Natural changes||20%|
|An unproven theory||22%|
Source: Opinion Research Corporation / CNN
Methodology: Telephone interviews with 1,028 American adults, conducted from May 4 to May 6, 2007. Margin of error is 3 per cent.