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How language on climate change has evolved

Source:  Copyright 2007, Associated Press
Date:  February 2, 2007
Original URL: Status ONLINE


A brief look at how language on climate change has evolved, gradually showing that man-made factors are to blame:

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"Most of the observed increase in globally averaged temperatures since the mid-20th century is very likely due to the observed increase in anthropogenic greenhouse gas concentrations ... The observed widespread warming of the atmosphere and ocean, together with ice mass loss, support the conclusion that it is extremely unlikely that global climate change of the past fifty years can be explained without external forcing, and very likely that it is not due to known natural causes alone." - Report of Working Group 1, IPCC Fourth Assessment Report, released Friday, Feb. 2, 2007.

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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." - Report of Working Group 1, IPCC Third Assessment Report, ...

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