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All IPCC definitions taken from Climate Change 2007: The Physical Science Basis. Working Group I Contribution to the Fourth Assessment Report of the Intergovernmental Panel on Climate Change, Annex I, Glossary, pp. 941-954. Cambridge University Press.
This is an illustration comparing global temperatures from EPICA to the last million years of human evolution and the rise of civiliation. The comparison was suggested by Skeptical Science author Sarah and illustrated by John Garrett (skeptical science author jg). The illustration was created for this post by Sarah: We've been through climate changes before