If people are to overcome the systemic challenges that threaten the future of life on planet earth, we need to overhaul the way in which we manage society, argue Carlos Lopes, Ignacy Sachs, Ladislau Dowbor. In a paper prepared for the World Social Forum in Bahia, Brazil in January, Lopes, Sachs and Dowbor attempt to set out the ‘minimum necessary measures to avoid catastrophes and to guarantee a sustainable and dignified life’.