Bulletin of the Atomic Scientists

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The best thinking on existential threats since 1945. Nuclear risk, climate change, and disruptive technologies. We set the #DoomsdayClock. thebulletin.org

A chart of "Shares of global electricity produced" from 1985 to 2025, showing a slow decline in nuclear power and a steady, and then fast, rise in renewables, overtaking nuclear power around 2018. Source: Molly Langabeer and M.V. Ramana's calculations based on data provided by the Energy Institute’s “Statistical Review of World Energy 2026.”
A magazine cover titled "Doomsday, The Movie!" The background image shows a partially melted film strip with an image of a character from the film "Dr. Strangelove" riding a nuclear missile, holding his hat in the air. The corners of the cover have the "Bulletin of the Atomic Scientists" logo as well as the month of publication, July 2026.
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Published today: "The very uncertain future of arms control." Read more at www.thebulletin.org. The magazine cover shows a graveyard with various weakened or expired treaties, including the Open Skies treaty and the INF treaty. In the foreground is a gravestone that says: "Arms Control, 1946 - "
Scan of a magazine cover with a teal background and sketches of satellites and weapons rotating around a simple yellow sun, with the phrase "The Endless Fantasy" repeating in a circle into it. "Star Wars" is the title, with a drawn star replacing the first "a." At the top reads: The Bulletin of the Atomic Scientists, July/August 1997 $6.00
"Disinformation as an existential threat multiplier." Image: Hands hold up a phone showing a social media feed with a green field with flowers under a blue sky. The phone is held up against a background of a burning field.
AI and our Nuclear Arsenal Decision Time: On February 19, experts will examine the current state of AI in nuclear command and control in a public virtual program presented by the Bulletin and the Outrider Foundation.
The Doomsday Clock statement: Sliding further down a slippery nuclear slope
Bulletin President and CEO Alexandra Bell reaches out to move the time on the Clock hand.
The Doomsday Clock timeline Explore the history of an internationally known symbol
"The dangerous trends in nuclear risk, climate change, disruptive technologies like AI, and biosecurity are accompanied by another frightening development: the rise of nationalistic autocracies in countries around the world. Our great challenges require international trust and cooperation." — Daniel Holz Bulletin Science and Security Board Chair
Who sets the Doomsday Clock? The Bulletin’s Science and Security Board sets the Doomsday Clock each year. The Board is comprised of a select group of globally recognized leaders with a specific focus on nuclear risk, climate change, and disruptive technologies. Learn more about the Board at the link in our bio.
"The Doomsday Clock's message cannot be clearer. Catastrophic risks are on the rise, cooperation is on the decline, and we are running out of time. Change is both necessary and possible, but the global community must demand swift action from their leaders." — Alexandra Bell Bulletin President and CEO
Why is it 85 seconds to midnight on the Doomsday Clock? The Bulletin's Science and Security Board explains the reasoning for the Clock setting in the Doomsday Clock statement. Read the statement by visiting thebulletin.org/doomsday-clock
"Without facts, there is no truth. Without truth, there is no trust. And without these, the radical collaboration this moment demands is impossible. Nuclear threats, climate collapse, AI risks: none can be addressed without first rebuilding out shared reality. The Clock is ticking." — Maria Ressa Nobel Laureate
IT IS 85 SECONDS TO MIDNIGHT ON THE DOOMSDAY CLOCK.
"Scientists have been really sounding the alarm on the destruction of underground ecosystems for decades. And no one was listening." — Toby Kiers Evolutionary biologist
Are we safer this year than we were last year? Tomorrow, watch the 2026 Doomsday Clock announcement to hear what experts think.
"The Bulletin's mission—protecting civilization from manmade threats like nuclear weapons and climate change—is important. Filling civilization with art and the humanity it fosters is important, too." — John Mecklin Bulletin of the Atomic Scientists Editor-in-Chief
“This COP set a record for fossil fuel lobbyists in attendance: 1,600, surpassing all individual country delegations except the host country.” — María de los Ángeles Orfila Bulletin Climate Change Editorial Fellow
Watch the 2026 Doomsday Clock Announcement on January 27th at 10 a.m. ET
People have a right to know about global threats. That's why the Bulletin exists. But we need your help.
"People sometime make fun of the [Doomsday] Clock, they say all sorts of things about it, but they pay attention to it, and that's the main thing, to be able to keep these issues in front of the public." - Kennette Benedict, Former Executive Director and Publisher of the Bulletin of the Atomic Scientists