The Clean Air Act is clear in stating the federal government should reduce the presence of harmful air pollutants. However, for years the Bush administration has ignored one of America's premiere environmental laws and failed to address perhaps the world's most harmful emissions: greenhouse gases. Today, the Supreme Court set the record straight. In what will surely be hailed as a landmark decision, the court ruled 5-4 the federal government can regulate greenhouse gas emissions. The ruling comes at an ideal time, as Congress and the American people are realizing the time to combat global climate change has arrived. Moreover, it proves the virtue of checks and balances in our democracy, as the Supreme Court has checked the Bush administration's failure to execute its constitutionally charged duties. For more from the Natural Resources Defense Council, click here. For background on the court case, click here.