All nuclear weapons resources
Explainer
![North Korea's ballistic missile](/sites/default/files/styles/thumbnail/public/2022-09/north-korea-ballistic-missile.jpg?itok=W79UHNKv)
North Korea Basics
Nuclear warheads, long-range missiles, and a combative leader. What are the options?
Activist Resource
![red door with luck dragons](/sites/default/files/styles/thumbnail/public/2024-03/red-door-with-luck-dragons.jpg?itok=0wOsApNv)
Understanding China’s Foreign and Defense Policies
Chinese primary sources including speeches by Xi Jinping shed light on China's defense and foreign polices as they relate to the US.
Explainer
![](/sites/default/files/styles/thumbnail/public/images/nuclear-weapons-how-they-work.jpg?itok=4fWMv5h2)
How Nuclear Weapons Work
At the center of every atom is a nucleus. Breaking that nucleus apart—or combining two nuclei together—can release large amounts of energy.
Podcast
![This is Science with Jess Phoenix Episode 7: Destroyer of Worlds](/sites/default/files/styles/thumbnail/public/2023-07/EP_7_Promo%20graphics%20template1500x900.jpg?itok=XbGxYJtw)
Destroyer of Worlds
Jess speaks with Oppenheimer biographer Kai Bird about one of Earth's most influential humans and his scientific and political legacies.
Explainer
![Dr. Conrad Examines Native Boy on Kwajalein](/sites/default/files/styles/thumbnail/public/2023-07/374-ANT-22-C-260.jpg?itok=hx71Pb8m)
What is Nuclear Testing?
A resumption would increase the risk of nuclear war.
Feature
![NASA mission satellite.](/sites/default/files/styles/thumbnail/public/images/gw-nasa-earth-science-mission-satellite.jpg?itok=sA04_Dh3)
Satellite Database
In-depth details on the 7,560 satellites currently orbiting Earth, including their country of origin, purpose, and other operational details.
Video
![UCS outreach coordinator in grey sweater](/sites/default/files/styles/thumbnail/public/2023-02/world-without-nuclear-weapons-video-still.png?itok=nWgKjaiE)
A World Without Nuclear Weapons
We can build a future that promotes diplomacy, environmental justice for frontline communities, and one where we abolish these uniquely destructive weapons.
Video
![White text over a gray background that reads "Risks and Consequences of Russia's War on Ukraine."](/sites/default/files/styles/thumbnail/public/2023-03/ukraine-war-risks-thumbnail.jpg?itok=xxEKld2J)
Risks & Consequences of Russia's War on Ukraine
What are the humanitarian costs of the use of tactical nuclear weapons?
Feature
![A worker rapelling of a wind turbine](/sites/default/files/styles/thumbnail/public/2022-11/wind-turbine-worker-rapel.jpg?itok=PvILFwkf)
2022 Annual Report
How did UCS perform over the last year?
Podcast
![Got Science? The Podcast - Jen Knox](/sites/default/files/styles/thumbnail/public/2022-10/gs-thumbnail-jen-knox.jpg?itok=UOEKONIn)
What’s Preventing Nuclear Annihilation?
Global security expert Jennifer Knox explains how international treaties reduce the risks of nuclear weapons.
Explainer
![The W80-4 Life Extension Program team](/sites/default/files/styles/thumbnail/public/2022-06/w80-bomb-sandia-labs.jpg?itok=QnYdcTqZ)
Tactical Nuclear Weapons
Also called nonstrategic nuclear weapons, they're designed for battlefield use and have a shorter range than other nuclear weapons.
Activist Resource
![Scientist speaking at a public event](/sites/default/files/styles/thumbnail/public/2019-09/about-communicating-science.jpg?itok=EXl8_eX1)
Communicating Science
Since its founding, the Union of Concerned Scientists has been a leader in science and technology communication. We’ve worked with thousands of researchers and academics to help them make their work more accessible to lay audiences.