Roads from Rio+20: Prof. Stefan Bringezu

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, Professor Stefan Bringezu (Wuppertal Institute for Climate, Environment and Energy) explains the changes in German energy policy.