"[The carbon market] is possibly the newest market in the world, a would-be global attempt to create a trade in the greenhouse gas emissions from any nation's fleet of cars, household refrigerators, electric power plants, factories, even farms. It's an attempt to peel back the smothering blanket of global warming by giving people a financial incentive to reduce emissions under an economic concept known as cap and trade. ... The effort to create a national market for such CO2 emissions received a serious blow when the U.S. Senate abandoned the effort to pass a climate bill this summer. But worldwide markets are growing..."