claim: In its 5th assessment report in 2013, the IPCC estimated that human emissions are probably responsible for more than half of the observed increase in global average temperature from 1951 to 2010.
evidence: The scientific consensus as of 2013[ update ], as stated in the IPCC Fifth Assessment Report, is that it is extremely likely that human influence has been the dominant cause of the observed warming since the mid-20th century.