"The world’s governments are not likely to come up with anything significant. The G-20 nations, which have been described as the “executive board of the world,” have little interest in bold political and institutional reform. That would only disrupt the desperate search for economic growth. An open, candid inquiry into the growth economy, consumerism and the finite carrying capacity of Earth’s biophysical systems would be far too politically explosive. It is far easier to talk about a “green economy,” as if greater efficiencies alone will save the planet."
Very good article by David Bollier on the importance of the concept of the "Global Commons" as the real solution to the challenges raised at the Rio+20 summit.