In March 2009 the Copenhagen Climate Council, an international team of leading climate scientists, issued a strongly worded statement: "The climate system is already moving beyond the patterns of natural variability within which our society and economy have developed and thrived.
Kopenhaško vijeće za klimu, internacionalni tim vodećih klimatologa, izdalo je u ožujku 2009. upečatljivu izjavu: "Klimatski sustav već se odavno kreće izvan obrazaca prirodne varijabilnosti unutar kojih se naše društvo i ekonomija razvijaju i napreduju.