California starts the ball rolling Wednesday on a controversial scheme to keep the planet from overheating. Businesses will have to get a permit if they emit greenhouse gases.
Some permits will be auctioned today; the rest are free. The big idea here is the state is putting a ceiling on emissions.
It's a gamble. And for this top-down climate plan to work, it has to usher in a greener, more efficient economy.
Read full article for Kammen's response.