nuclear proliferation

black and white photo of people observing a nuclear test explosion in the Nevada desert in 1955; they all hold goggles to their faces to protect themselves from the flash of the blast

National Archives at College Park/Wikimedia Commons

January 14, 2026

The Nuclear Testing Moratorium Passes a Milestone

Dylan Spaulding
Senior Scientist

photo of a gloved hand holding a plutonium pit, which appears to be a gray metallic disc

US Department of Energy

June 12, 2025

Ask a Scientist: New Plutonium Pits for Nuclear Weapons Are Not Needed

Guest Commentary

President Joe Biden delivers remarks at an Executive Order signing on Artificial Intelligence, Monday, October 30, 2023 in the East Room of the White House.

The White House/Flickr

March 4, 2024

Artificial Intelligence and the Evolving Landscape of Nuclear Strategy

UCS Science Network

Congress recently approved funding to replace ICBMs despite research showing they are not only superfluous, but they actually increase the risk of nuclear war.

August 5, 2020

Ask an Expert: Congress Plans to Spend Billions on Dangerous, Unnecessary Nuclear Weapons

Elliott Negin
Former Contributor

August 31, 2015

Scientists Support The Iran Deal—And They’re Bringing it to Social Media

David Wright
Former Contributor