Four environmental law cases are currently pending before the United States Supreme Court. The outcome of these closely watched cases will have far-reaching

implications for various interested parties, including the energy and building industries, regulators,

and environmentalists.

Massachusetts v. Environmental Protection Agency,

Environmental Defense v. Duke Energy Corp.,

National Association of Homebuilders v. Defenders of Wildlife & Environmental Protection Agency v. Defenders of Wildlife, and United States v. Atlantic Research Corp.