But as December’s failure in Copenhagen shows, there won’t be a comprehensive agreement on a Green energy world just yet. But that doesn’t mean the push to reduce greenhouse gases and shift to alternative energies is over. For one, the U.S. is proposing its own carbon cap-and-trade market, in which carbon emissions would be capped and credits traded, allowing dirty emitters to continue to emit while those who shift to Green energies would gain credits to sell. Over time, the caps would lower. Now I know there is plenty of skepticism around about federal programs, but I’ve had the...