Climate Change in the Supreme Court

In Massachusetts v. Environmental Protection Agency, the Supreme Court confronted the issue of climate change for the first time. The Court held that the Clean Air Act gives the Environmental Protection Agency the authority to regulate greenhouse gases and that the agency may not decline to exercise this authority based either on factors not present in the statute or inconclusive gestures toward uncertainty in the science of climate change. I had the privilege of serving as the lead author of the winning briefs in this case. This Article provides an insider's perspective on the choices that went into bringing and briefing the case. This Article is an edited version of the 20th Annual Natural Resources Law Institute Distinguished Lecture, delivered in the fall of 2007 at Lewis & Clark Law School.