Three judges on the D.C. Circuit Court recently dismissed a lawsuit aiming to have EPA regulate greenhouse gases from cars and trucks, a defeat for the state attorneys general and environmental groups who filed the suit. Former EPA general counsel Lisa Jaeger, now a partner with Bracewell & Giuliani LLP, and Howard Fox, managing attorney at Earthjustice, explain their take on the majority decision, as well as a lengthy dissent from one of the judges. Jaeger and Fox describe what the panel said about the agency's authority to manage carbon dioxide emissions. Plus, they interpret what the judges said about the current state of climate science and how this decision could affect ongoing climate lawsuits in the Northeast and in California.