President Obama says the battle to slow global warming will be good for the US economy. He wants an energy policy in time for the UN Climate Change Conference in Copenhagen this coming December. A House committee has passed a sweeping 932-page bill that would re-engineer the production of energy and change the economic behavior of every American. It's expensive, and complicated enough to address the concerns of innumerable interest groups. But some environmentalists warn it's too little, too late. Some conservatives argue it's not worth the effort. The debate will go on for at least the rest of this year. We hear the beginning.