[27 June 2007] [en]Key conclusions from the Fourth Assessment Report of the Intergovernmental Panel on Climate Change We're in the midst of global warming - (0.8 ∫C warming so far; warmer than last 1300 years)
Anthropogenic greenhouse gas emissions are its main cause
Warming has increased the risk of extreme events - heat waves, droughts, flooding, intensity of tropical storms
Climate change will completely change the world if unchecked - 2-7 ∫C global warming by 2100, risk of "surprises"
Sea level rise:
– 20th Century: 15-20 cm
– Current rate: 3 cm per decade
– Until 2100: probably < 1 m
– Centuries: several meters likely
– Regional variation due to ocean circulation