IPCC Fourth Assessment Report

February 23, 2011

The Intergovernmental Panel on Climate Change (IPCC) released the Fourth Assessment Report on Climate Change (AR4) in 2007. AR4 is perhaps the largest and most comprehensive summary of climate change ever written, and assesses scientific, technical and socio-economic information in the understanding of anthropogenic climate change, its potential impacts, and options for mitigation and adaptation. Read the report on the IPCC website.