Alexandra Bell is the president and CEO of the Bulletin of the Atomic Scientists. Prior to this, Bell served as the Deputy Assistant Secretary for Nuclear Affairs in the Bureau of Arms Control, Deterrence, and Stability (ADS) at the U.S. Department of State. From 2017 to 2021, she was the Senior Policy Director at the Center for Arms Control and Non-Proliferation and the Council for a Livable World. Previously, Bell served as a Senior Advisor in the Office of the Under Secretary of State for Arms Control and International Security and as an Advisor in ADS, then named the Bureau of Arms Control, Verification and Compliance. She also worked on nuclear policy issues at the Ploughshares Fund and the Center for American Progress. She received a Master’s degree in International Affairs from the New School, and a Bachelor’s degree in Peace, War and Defense from the University of North Carolina at Chapel Hill.

David Harrington is the founder and artistic director of the Grammy-winning Kronos Quartet. Since 1973, the Kronos Quartet has been at the forefront of revolutionizing the string quartet into a living art form that responds to the people and issues of our time. Harrington and the collective have become one of the most celebrated and influential groups of our era, performing thousands of concerts worldwide, releasing more than 70 recordings of extraordinary breadth and creativity, and collaborating with many of the world’s most accomplished composers and performers.

Kim Stanley Robinson is an American science fiction writer. His most recent books are The Ministry for the Future and The High Sierra: a Love Story. Focused on social change, he was a featured speaker at the UN Climate Change Conference in Glasgow (COP-26), and at the UN’s Summit of the Future in 2024. His work has been translated into 29 languages, and The Atlantic has called his work "the gold standard of realistic, and highly literary, science-fiction writing."  In 2016 asteroid 72432 was named “Kimrobinson.”

Lovely Umayam is the founder and chief creative producer for Bombshelltoe, the first-prize winner of the US Department of State’s Innovation in Arms Control Challenge in 2013. Lovely’s work under Bombshelltoe has been featured in PopTech, Einstein Forum, SxSW Interactive, MoMA PS1, the Associated Press, and the US Department of State’s Generation Prague Conference. Lovely is currently a consultant to the United Nations Office for Disarmament Affairs. From 2016 - 2019, she managed the nuclear security portfolio at Stimson, where she led projects on security governance and supply chain security. Prior to joining Stimson, Lovely served as a Program Manager at the Office of Nonproliferation and Arms Control within the US Department of Energy - National Nuclear Security Administration (DOE/NNSA), where she implemented nuclear safeguards engagement projects in Southeast Asia and Latin America.