The authoritative guide to ensuring science and technology make life on Earth better, not worse.

nuclear weapons

Video: How many people were killed by the bombing of Hiroshima and Nagasaki?

By Erik English | Multimedia, Nuclear Risk

North Korean nuclear weapons, 2024

By Hans M. Kristensen, Matt Korda, Eliana Johns, Mackenzie Knight | Nuclear Notebook, Nuclear Weapons

No debate: On existential threats, Biden, Trump, and CNN all largely failed

By John Mecklin, Thomas Gaulkin | Climate Change, Disruptive Technologies, Nuclear Risk, Special Topics

United States nuclear weapons, 2024

By Hans M. Kristensen, Matt Korda, Eliana Johns, Mackenzie Knight | Nuclear Notebook, Nuclear Weapons

Nukes, political violence, and environmental exploitation: The enduring relevance of Dune

By Erik English | Analysis, Nuclear Risk

The short march to China’s hydrogen bomb

By Hui Zhang | Investigative Reporting, Nuclear Weapons

International reactions to China’s nuclear weapon: ‘A Bomb for all Asians and Africans’

By Nicola Leveringhaus | Nuclear Weapons

Oppenheimer’s second coming

By Gregory Kulacki | Nuclear Weapons

To prevent global catastrophe, governments must first admit there’s a problem

By Rumtin Sepasspour, Courtney Tee | Disruptive Technologies

Russian nuclear weapons, 2024

By Hans M. Kristensen, Matt Korda, Eliana Johns, Mackenzie Knight | Nuclear Notebook, Nuclear Weapons

The horrors of nuclear weapons testing

By Walter Pincus | Nuclear Risk, Nuclear Weapons

crater left over from underground nuclear test

Environmental impacts of underground nuclear weapons testing

By Sulgiye Park, Rodney C. Ewing | Nuclear Risk, Nuclear Weapons, Special Topics