In the few months since the Sustainable Development Commission released its report – Prosperity Without Growth - President Nicolas Sarkozy has asked world leaders to join a revolution in the measurement of economic progress, Sir Nicholas Stern has warned ‘at some point we would have to think about whether we want future growth’, and John Prescott has called the current economic growth model 'immoral'.

In Prosperity without Growth: Economics for a Finite Planet an updated and expanded version of the SDC report, Tim Jackson offers a new vision of a shared prosperity: the capability to flourish as human beings - within the ecological limits of a finite planet. Fulfilling that vision, he argues, is simply the most urgent task of our times.

Join Tim in the debate about this task here.