a1 New College, Oxford
What makes climate change such a difficult problem to solve is that it is so pervasive: it is global but with very different effects on regions and nations. It stretches through time to many future generations. Its causes are ultimately the growth of population, the structure of production and growing consumption: greater numbers require ever more to make them happy.
(Online publication September 22 2011)
1 I have greatly benefitted from comments and discussions with David Wiggins and Cameron Hepburn. The views and errors here remain mine alone.