On Sept. 20, the U.S. Environmental Protection Agency announced a new proposal to limit carbon dioxide (CO2) emissions from new coal-fired power plants. The Center for Effective Government applauded the steady progress on the rule but warned of likely challenges from climate-change deniers, regulatory opponents, and their allies in Congress. Over the past month, these challenges have appeared in the form of draft legislation and appropriations riders that seek to repeal or severely limit EPA's authority to regulate greenhouse gas emissions from fossil-fueled power plants under the Clean Air Act.

Climate change has become the largest environmental concern in decades, and transparency and accountability will be critical in providing an effective response to combating it. As we move forward in making new policies related to climate change, it is critical that the public be well informed about the issue. The U.S. Environmental Protection Agency (EPA) has an online tool offering users a means to explore the sources of greenhouse gas emissions.