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Question
Is global warming primarily caused by humans?
Answer
Mostly Agree
Quote
Most of the global average warming over the past 50 years is very likely due to anthropogenic GHG increases and it is likely that there is a discernible human-induced warming averaged over each continent (except Antarctica).
Reference
Expert(s)
Intergovernmental Panel on Climate Change
Date
01 Jan 2008
Source Link
http://www.ipcc.ch/ipccreports/ar4-syr.htm
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