Timothy Brennan is a professor Emeritus in public policy and economics at the University of Maryland Baltimor County (UBMC), and a senior fellow with Resources for the Future (RFF). He has been at the UMBC faculty since 1990. Before coming to UMBC, he was an economist with the Antitrust Division of the U.S. Department of Justice and taught in the telecommunications policy program at George Washington University. From 1996-97, he was a senior economist for the White House Council of Economic Advisers, and in 2003-05 served as a staff consultant to the U.S. Federal Trade Commission. During 2006, he held the T. D. MacDonald Chair in Industrial Economics at the Canadian Competition Bureau. He has advised on competition law internationally for authorities in countries including Australia, Costa Rica, Mexico, Russia, the Slovak Republic, Sweden, and Uzbekistan. Prof. Brennan’s research has addressed topics in antitrust, regulatory economics, copyright, electricity markets, telecommunications and media policy, environmental economics, and methods and ethics in public policy. His antitrust-related publications have looked at market definition, monopolization standards, vertical integration, per se rules, interconnection agreements, and applications to regulated sectors and the Microsoft case. His current research is focusing on energy efficiency policies, the role of cost-benefit analysis in climate policy, and standards for legality of exclusionary practices, particularly with regard to bundled rebates, in antitrust law.