The first report from the UN’s Intergovernmental Panel on Climate Change in six years, which brings together hundreds of scientists, says it is more sure than ever that mankind is the main driving force behind global warming.
Told in 2007 to go away again and refine their techniques, the Panel is more emphatically pointing the finger this time. It says the effects of greenhouse gases already emitted will linger for centuries to come, and that we should brace ourselves for more heatwaves, floods, droughts, rising sea levels, and more acidic oceans.
The report also explains the slowing rising temperatures over the last 15 years, often used as an argument by sceptics, as the result of masking by substantial natural variations.
In figures the probability global warming is man-made has been revised up to 95%, from 66% in 2001, and 90% in 2007. Temperature increases and sea level rises have been revised upwards, too.