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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.
"... everything I’ve learned about the dynamism of the planet’s climate places me, like most all of my colleagues, strongly in the camp that says we need to take preventive action to keep the planet from warming further. I am extremely concerned that we’ve made such large changes in the composition of our atmosphere with so little understanding of the consequences. The path we are on is completely anomalous to anything that has gone before."