What is the evidence for Climate Change?
In late 2007, the Intergovernmental Panel on Climate Change released their fourth Assessment Report (AR4), drawing together the scientific evidence on climate change. This report states unequivocally the manifold evidence that climate change is occurring. Global average air temperatures are rising, with eleven of the last twelve years (1995-2006) ranking amongst the twelve warmest years in the instrumental record of global surface temperature.
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