Key Scientific Developments Since the IPCC Fourth Assessment Report

Science Brief
June 2009

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The Intergovernmental Panel on Climate Change (IPCC) released its Fourth Assessment Report in 2007, summarizing the scientific community‚Äôs current understanding of the science of climate change.  Since that time, a number of new scientific results have been published that expand our understanding of climate science.  This brief summarizes some of the key findings since the last IPCC assessment.