Reuters | Copenhagen climate accord: Key issues BBC News The BBC's environment correspondent Richard Black analyses key elements of the US-backed climate deal agreed in Copenhagen. One widely-accepted definition of "dangerous climate change" is that it begins at a global temperature rise of 2C. ... UN Climate Talks 'Take Note' of Accord Backed by US Delegates 'take note' of brokered agreement UN conference recognizes climate pact; Ban: We have a deal |
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