Governments have a historic opportunity this June to create the institutions needed to fulfill the promise made at the 1992 Earth Summit. The Rio+20 UN conference on sustainable development should mark nothing less than a constitutional moment, putting the planet on a more sustainable path. But, it is in grave danger of being stillborn, lacking the political will to commit to the transformations required to collectively thrive within planetary boundaries.
The need for action hardly needs rehearsing. To put it bluntly, humanity is demanding more of the Earth than it can supply, sending us toward tipping points beyond which the planet’s air, water and other natural systems can’t recover.
For more on this story, visit: How Rio+20 can herald a constitutional moment | Frank Biermann and Steven Bernstein | Environment | guardian.co.uk.