Two prominent environmental groups have proposed a direct approach to controlling carbon emissions that doesn’t require a new climate law, or even a cap-and-trade agreement.
The strategy is simple: Use the U.S. Clean Air Act.
On Wednesday, the Center for Biological Diversity and 350.org petitioned the Environmental Protection Agency to set national limits for carbon dioxide and other greenhouse gas pollution under the Clean Air Act.
The petition asks that greenhouse gases that are classified as “criteria” air pollutants, as well as atmospheric CO2, be capped at 350 parts per million (ppm) which is the level that many scientists now believe is required to avert the worst impacts of global warming.


