After twenty years of global negotiations, the world is still far from a comprehensive climate agreement. The "top-down" approach embodied by the Kyoto Protocol has all but stalled, chiefly due to disagreements over levels of ambition and objections to financial transfers. To avoid those...

Santiago was one of the first cities outside the OECD to implement a tradable permit program to control air pollution. This paper looks closely at the program's performance over the past ten years, stressing its similarities and discrepancies with trading programs implemented in developed...