Of course the green groups have cheered the report.
Check it out:

Global greenhouse gas emissions accelerated to drastic levels at the start of the century despite an increased number of policies directed at mitigating global warming, the United Nations’ top panel on climate change says.

In a report released Sunday, the Intergovernmental Panel on Climate Change (IPCC) warned world leaders that the use of low- or zero-carbon energy sources must be tripled by 2050 to prevent catastrophic damage.

Only ambitious measures, the panel notes, will ensure the global temperature is limited to an increase of two degrees Celsius. That may include completely ridding carbon dioxide from the atmosphere.

“Climate policies in line with the two degrees Celsius goal need to aim for substantial emission reductions,” said Germany’s Ottmar Edenhofer, one of three co-chairs who sits on the panel’s working group.