Royal Society: "conspicuous failure of the G8 ..."

It doesn't get any more authoritative than the Royal Society:

"In reaction to the publication ... of the G8 communique on climate change, Lord May of Oxford, President of the Royal Society, said:

"'At the heart of this communique is a disappointing failure by the leaders of the G8 unequivocally to recognise the urgency with which we must be addressing the global threat of climate change. Make no mistake, the science already justifies reversing, not merely slowing the global growth of greenhouse gas emissions. It is the responsibility of the leaders of the G8 nations to respond to this. And further delays will make the G8s avowed commitment in this communique to avoid dangerous impacts of climate change extremely difficult.

"'The conspicuous failure of the G8 explicitly to mention even the need for targets to reduce emissions of greenhouse gases underlines our concern.'"
Royal Society | News