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

Iran vs. Israel redux: The enormous difficulties and ramifications if Israel attacks Iran’s nuclear sites

By Darya Dolzikova, Matthew Savill | Nuclear Weapons

A wargame suggests how a war between Israel and Iran might go nuclear

By Henry Sokolski | Nuclear Weapons

Why Russia is more likely to go nuclear in Ukraine if it’s winning

By Mariana Budjeryn | Nuclear Weapons, Opinion
Hand of robot repairing a bridge

Don’t panic: AI can strengthen democracy too

By Abi Olvera | Artificial Intelligence, Disruptive Technologies

E-fuels are better for the climate than fossil fuels, so why haven’t they taken off yet?

By Chad Small | Climate Change
A National Oceanic and Atmospheric Administration satellite captured Hurricane Helene making landfall near Perry, Florida, just east of the Aucilla River's mouth on Sept. 26, 2024, at 11:10 p.m. EDT. With winds reaching 140 mph and storm surges estimated at as high as 15 feet, the Category 4 storm was among the most powerful to strike the United States.

Hurricane Helene isn’t an outlier. It’s a harbinger of the future.

By John Morales | Analysis, Climate Change

Question for the candidates: How will you reassure allies worried about the credibility of the US security guarantees?

By Sara Bjerg Moller | Nuclear Weapons
US President Joe Biden (L) and California Governor Gavin Newsom at an event discussing the opportunities and risks of artificial intelligence at the Fairmont Hotel in San Francisco, California in June 2023. (Photo by ANDREW CABALLERO-REYNOLDS/AFP via Getty Images)

Why California Gov. Gavin Newsom should sign an AI model regulation bill

By Anthony Aguirre | Artificial Intelligence, Disruptive Technologies, Opinion

Strengthening democracy and pandemic preparedness go hand in hand

By John Bridgeland, Elizabeth (Beth) Cameron, J. Stephen Morrison, Jennifer B. Nuzzo, Aquielle Person | Biosecurity
national guard members carry bottle water after hurricane sandy

‘We’re not going fast enough’: Sherri Goodman on climate change as security threat

By Jessica McKenzie | Climate Change
President Vladimir Putin talks with the governor of Kursk on the situation regarding the Ukrainian invasion of the south of the oblast. Kremlin.ru, CC BY 4.0, via Wikimedia Commons.

The new red line: Why a prolonged conflict in Ukraine makes a nuclear attack more likely

By Phillips P. O’Brien | Analysis, Nuclear Risk

An interview about the 2024 election with Harper Reed, chief technology officer for Obama 2012

By John Mecklin | Special Topics

Hand of robot repairing a bridge

Don’t panic: AI can strengthen democracy too

By Abi Olvera | Artificial Intelligence, Disruptive Technologies

A National Oceanic and Atmospheric Administration satellite captured Hurricane Helene making landfall near Perry, Florida, just east of the Aucilla River's mouth on Sept. 26, 2024, at 11:10 p.m. EDT. With winds reaching 140 mph and storm surges estimated at as high as 15 feet, the Category 4 storm was among the most powerful to strike the United States.

Hurricane Helene isn’t an outlier. It’s a harbinger of the future.

By John Morales | Analysis, Climate Change

Iran vs. Israel redux: The enormous difficulties and ramifications if Israel attacks Iran’s nuclear sites

By Darya Dolzikova, Matthew Savill | Nuclear Weapons

Indian nuclear weapons, 2024

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

A wargame suggests how a war between Israel and Iran might go nuclear

By Henry Sokolski | Nuclear Weapons

Why Russia is more likely to go nuclear in Ukraine if it’s winning

By Mariana Budjeryn | Nuclear Weapons, Opinion

A painted Doomsday Clock surrounded by text snippets and illustrations from the Bulletin’s magazine archives appears beside text that reads, “Discuss the US elections, geopolitics, space, and more at the Bulletin’s annual gathering.” Beside it, a button that reads: “Get my ticket.”

The Bulletin interactive

See all of the world's BSL-4 laboratories—and more

Virtual Tour: Turn Back the Clock

Doomsday Dashboard

Nuclear Arsenals of the World

Doomsday Clock Timeline

What's new at the Bulletin

Artwork created by Lovely Umayam weaves together art and snippets of writing from the Bulletin’s archives to form a landscape mosaic that evokes the interweaving of art, words, and ideas.

Discuss the US elections, geopolitics, space, and more at Conversations Before Midnight

Rose Gottemoeller, the former Deputy Secretary General of NATO, and Manpreet Sethi, a distinguished fellow at the Centre for Air Power Studies, join Bulletin leadership.

The Bulletin welcomes top nuclear security experts to its leadership

Bulletin editor-in-chief John Mecklin (left), Bulletin President and CEO Rachel Bronson (center), and CEO of Lightbridge Corporation Seth Grae (right) converse during the 2023 Doomsday Clock Leadership Luncheon. Photo by Jamie Christiani.

Bronson to step down as Bulletin president & CEO

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