Meet Our Bloggers
David Combs holds a master’s degree in public administration from Roosevelt University, and a B.A. in art, entertainment, and media management from Columbia College Chicago. He is the Midwest Outreach Coordinator for the Global Security Program at the Union of Concerned Scientists (UCS). He builds coalitions and partnerships among UCS members and other groups to push for United States leadership on nuclear weapons issues. Prior to joining UCS David organized in the Midwest with the ONE Campaign, a nonprofit that advocates for legislation in support of U.S. global aid, and served on the board of the local United Nations Association (UNA) chapter in Chicago.
Dr. Grego received her PhD in physics from the Caltech in 1999. She was a postdoctoral researcher for three years at the Harvard-Smithsonian Center for Astrophysics, where she investigated issues in cosmology using X-ray, radio, and optical data, and numerical simulation. She has been at UCS since 2002. Areas of expertise: Space weapons and security, ballistic missile proliferation, ballistic missile defense
Dr. Gronlund received her PhD in physics from Cornell University in 1989. She was a postdoctoral fellow at the MIT Defense and Arms Control Studies Program and an SSRC-MacArthur Foundation Fellow in International Peace and Security at the Center for International Security Studies at the University of Maryland. She is a Fellow of the American Association for the Advancement of Science and the American Physical Society (APS), and was a recipient of the APS Joseph A. Burton Forum Award in 2001. She worked at UCS between 1992 and 2020. Areas of expertise: U.S. nuclear weapons and nuclear weapons policy, nuclear terrorism and international fissile material control, ballistic missile defense. Lisbeth also wrote on the Equation.
China project manager and senior analyst
Dr. Kulacki received his Ph.D. In Government and Politics from the University of Maryland in 1994. He was the China Director for the Council on International Educational Exchange, an Associate Professor at Green Mountain College and the Director of External Studies at Pitzer College. He joined UCS in 2002. His research focuses on China’s nuclear arms control policy and US extended nuclear deterrence policy in East Asia, where Gregory has lived and worked for the better part of the last thirty years. Areas of expertise: Chinese nuclear weapons policy, China’s space program, cross-cultural communication. Gregory also blogs on the Equation.
Director of Nuclear Power Safety, Climate & Energy
Dr. Lyman received his PhD in physics from Cornell University in 1992. He was a postdoctoral research scientist at Princeton University's Center for Energy and Environmental Studies, and then served as Scientific Director and President of the Nuclear Control Institute. He joined UCS in 2003. He is an active member of the Institute of Nuclear Materials Management and has served on expert panels of the Nuclear Regulatory Commission. His research focuses on security issues associated with the management of nuclear materials and the operation of nuclear power plants, particularly with respect to reprocessing and civil plutonium. Areas of expertise: Nuclear terrorism, proliferation risks of nuclear power, nuclear weapons policy
Ms. MacDonald received her MA in International Relations and Comparative Politics from Cornell University in 2009, specializing in China. Before coming to UCS in 2011 she worked at the MIT International Science and Technology Initiatives (MISTI) program, and was an instructor at Endicott College teaching courses on international relations. Areas of expertise: Nuclear weapons complex, China
Manager of strategic campaigns
Mr. Meyer has been a public policy advocate and communications professional since 1985. From 1988 to 1991, he was the National Field Coordinator for the UCS security program, and later served as a lobbyist/field organizer for the Professionals’ Coalition for Nuclear Arms Control. Subsequently, he served in senior marketing and communications positions for a marketing and advertising firm, and ran his own communications firm—Sean Meyer Communications—from 2003 to 2007. He rejoined UCS in 2007, where he oversees UCS engagement and education of the scientific community and the general public on security and nuclear power safety issues. Areas of expertise: Nulcear power safety, U.S. nuclear weapons policy, nuclear terrorism, grassroots organizing, issue advocacy
Cameron Tracy is the Kendall Fellow for the Global Security program at the Union of Concerned Scientists. His work focuses on nuclear arms control and the interface between science and security policy. His current research involves analysis and modeling of the flight conditions of hypersonic weapons in order to determine their effects on global strategic stability.
Dr. Wright received his PhD in physics from Cornell University in 1983, and worked for five years as a research physicist. He was an SSRC-MacArthur Foundation Fellow in International Peace and Security in the Center for Science and International Affairs in the Kennedy School of Government at Harvard, and a Senior Analyst at the Federation of American Scientists. He is a Fellow of the American Physics Society (APS) and a recipient of APS Joseph A. Burton Forum Award in 2001. He worked at UCS between 1992 and 2020. Areas of expertise: Space weapons and security, ballistic missile proliferation, ballistic missile defense, U.S. nuclear weapons and nuclear weapons policy. David also wrote on the Equation.
Washington representative and senior analyst
Mr. Young has an MA in International Affairs from Columbia University. He served as a fellow in the Bureau of Human Rights at the State Department, as Senior Information Specialist at ACCESS: A Security Information Service, as Co-Legislative Director of 20/20 Vision, as Senior Analyst at the British American Security Information Council, and as Deputy Director of the Coalition to Reduce Nuclear Dangers, a national alliance of 17 major nuclear disarmament organizations. He joined UCS in 2001. Areas of expertise: U.S. nuclear weapons policy, nuclear terrorism, ballistic missile defense, arms control and international security, issue advocacy