Roads from Rio+20: Dr. Mamphela Rampele

In the run-up to the Rio+20 Conference in June 2012, Professor Maarten Hajer (director of PBL Netherlands Environmental Assessment Agency) talked to an international group of people on the worldwide search for effective ways to solve sustainability challenges.

Here, Dr. Mamphela Rampele (South African academic and trustee on the board of the Rockefeller Foundation) reflects on the idea of a global stock exchange for sustainable development, where development aid would be replaced by social investment.