The Supreme Court's current term is already sure to be an big one for environmental law. Two major Clean Air Act cases, Massachusetts v. EPA and Environmental Defense v. Duke Energy, should yield important environmental decisions and more may be on the way. As Marty Lederman details on SCOTUSBlog, the Solicitor General has recently filed petitions for certiorari in four environmental cases, including another Clean Air Act case, and has acquiesced to certiorari in two others. Adding just a few of these cases to the Court's dockets would make this a truly major environmental term.