Professor Lazarus teaches environmental law, natural resources law, federal hazardous waste regulation, and torts. He previously worked for the U.S. Justice Department, in both the Environmental and Natural Resources Division and the Solicitor General's Office, where he was assistant to the Solicitor General. Professor Lazarus has represented the United States, state and local governments, and environmental groups in the U.S. Supreme Court in approximately 30 cases, many of which raised natural resource and environmental law issues. His legal scholarship is in the area of environmental and natural resources law. He has most recently published law review articles on the Fifth Amendment Just Compensation Clause, environmental justice, and environmental crime. Professor Lazarus serves on several national advisory boards, including the Environmental Defense Fund's Litigation Review Committee.