Rio+20 wasn’t even worth a bimp on the local media’s radar screen (in Hong Kong). Maybe the latter were prophets and knew nothing constructive would came out of it. Non-governmental and NGOs thought it was just some “rubber-stamp” protocols that the world leaders went through.
Or perhaps people’s attention were sidetracked by non-issues like the Eurozone crisis or the upcoming U.S. presidential election. How perverse our world had become!