While we watch negotiators in Doha, Qatar continue to struggle to find international agreement on effective climate change minimization measures, it's useful to look at one part of the planet where aggressive actions are underway. No, not the U.S. federal government, which took time out of preparations for “fiscal cliff” negotiations to pass a law on November 27 empowering the Department of Transportation to prohibit U.S. airlines from participation in the European Union’s Emissions Trading Scheme (Public Law No. 112-200). This month's prime example of action is California, which just held its first auction of greenhouse gas (GHG) emission allowances to inaugurate a statewide cap-and-trade program.