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“Climate Impacts and Adaptation in Maryland”, National Academies of Sciences, America’s Climate Choices, Washington, D.C., May 4-5, 2009.

“Testimony – State of Maryland Joint Hearings on the Greenhouse Gas Reduction Action”, Annapolis, Maryland, February 27, 2009.

“Testimony – State of Maryland, Senate Education, Health and Environmental Affairs Committee Hearing on the Greenhouse Gas Reduction Action”, Annapolis, Maryland, February 10, 2009.

“Testimony – State of Maryland Joint Hearings on Global Warming Solutions”, Annapolis, February 29, Maryland, 2008.

“Climate Impacts on Urban Infrastructure”, National Research Council, Washington, D.C., June 17, 2004.

“Implications of Climate Change for the Poor in the US”, US Conference of Catholic Bishops, Washington, D.C., May 22, 2002.

“Material Flows and the US Pulp and Paper Industry”, National Academy of Sciences, Washington, D.C., August 15, 2002.