The 49-page agreement produced at the Rio+20 Earth Summit is unmitigated junk. I'm not going out on a limb here. It's one of those rare universally agreed upon truths.
Greenpeace called the summit a "failure of epic proportions". The organisers of the original 1992 Rio Summit said the document was a weak collection of "pious generalities". Friends of the Earth described it as "hollow". George Monbiot wrote it was "meaningless platitudes". Richard Branson used the phrase "mealy-mouthed".
For more, see Australian Broadcasting Corporation.