claim: But it is part of a long list of studies from independent teams ( as this interactive graphic shows ), using a variety of methods that take account of critical challenges, all of which conclude that climate models exhibit too much sensitivity to greenhouse gases.
evidence: The Climate Science Special Report : Fourth National Climate Assessment, Volume I ( October 2017 ) provided the following summary : This assessment concludes, based on extensive evidence, that it is extremely likely that human activities, especially emissions of greenhouse gases, are the dominant cause of the observed warming since the mid-20th century.