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Argument: 2001 IPCC report concludes humans causing climate change

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"There is new and stronger evidence that most of the warming observed over the last 50 years is attributable to human activities." [1]

Joseph Romm. Book Hell and High Water. 2007. pp 12. - "How strong is the scientific consensus? Back in 2001, President George W. Bush asked the National Academy of Sciences for a report on climate change and on the conclusions of the IPCC assessments on climate change. The eleven member blue-ribbon panel, which included experts previously skeptical about global warming, concluded: Temperatures are rising because of human activities; the scientific community agrees that most of the rise in the last half-century is likely due to increased greenhouse gas concentrations in the atmosphere; and 'the stated degree of confidence in the IPCC assessment is higher today than it was 10, or even 5 years ago.'"

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