“Global Warming: Fact or Fiction?” David Legates, University of Delaware, March 24, 2009.

“A Social Science Perspective on Media Bias,” Jeffrey Milyo, University of Missouri, April 16, 2009.

“Why So High? Gasoline Prices and U.S. Energy Policy,” David Sykuta, American Petroleum Institute, October 6, 2008.

“Challenges Facing the U.S. Economy: What Would Reagan Do?” Murray L. Weidenbaum, Washington University in St. Louis, April 9, 2008.

“Enron and the Mirage of ‘Sustainable’ Energy,” Robert L. Bradley, Jr., Institute for Energy Research, October 4, 2007.

“Effective Leadership,” Michael R. Hogan, Sigma-Aldrich Corporation, April 4, 2007.

“Briefing on Eastern Europe: An Ambassador's Assessment,” George H. Walker III, Former U.S. Ambassador to Hungary, February 28, 2007.

“How High-Yield Farming Saves the Nature,” Dennis T. Avery, Center for Global Food Issues, November 14, 2006.

“How Serious is the Global Warming Threat?” Roy W. Spencer, University of Alabama at Huntsville, April 4, 2006.

“How Dangerous is the U.S. Current Account Deficit?” William Poole, President, Federal Reserve Bank of St. Louis, November 9, 2005.

“Why America’s Air Quality is Better than You Think,” Joel Schwartz, American Enterprise Institute, September 29, 2005.

“Improving the Environment ... Leave it to the States ... and to the People,” Becky Norton Dunlop, Heritage Foundation, April 20, 2005.

“Motivating China To Play Fair in Global Markets,” William H. Lash, III, Assistant Secretary of Commerce for Market Access Compliance, October 12, 2004.

"Is Climate Change the 21st Century’s Most Urgent Environmental Problem?” Indur M. Golkany, September 28, 2004.

“Globalization Effects on the Environment--Boon or Bane?" Jo Kwong, Atlas Economic Research Foundation, March 29, 2004.

“Business Selection,” James Issler, President and COO, H.H. Brown Shoe Co., Inc., October 8, 2003.

“Moving Beyond Conflict: Private Stewardship and Conservaton Partnership,” Lynn Scarlett, Assistant Secretary of the Interior, October 29, 2003.

“Big Benefits from International Trade Require a Level Playing Field,” William H. Lash, III, Assistant Secretary of Commerce for Market Access Compliance, May 21, 2003.

“The Effects of Globalization: A View From the Developing World,” Andres Mejia-Vergnaud, Instituto Desarrollo y Libertad, April 21, 2003.

“Toward Better Environmental Education,” Jane S. Shaw, Political Economy Research Center, November 7, 2002.

“Meeting America's Future Energy Needs,” Murray L. Weidenbaum, Washington University in St. Louis, October 4, 2002.