Bulletin of the Atomic Scientists

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

How Fukushima’s radioactive fallout in Tokyo was concealed from the public

By François Diaz-Maurin | Investigative Reporting, Nuclear Energy, Nuclear Risk

firefighter in silhouette with multiple fires in background

‘Not enough firefighters’: Historic wildfires rage unabated in Southern California

By Jessica McKenzie | Climate Change

Trump has a fighting chance to prevent Arctic meltdown. He should take it.

By Durwood J. Zaelke, Paul Bledsoe | Climate Change

Why US sanctions against Pakistan’s ballistic missile program might backfire

By Syed Ali Zia Jaffery | Nuclear Weapons, Opinion

What a second Trump administration may mean for the Saudi nuclear program

By Nour Eid | Nuclear Risk, Voices of Tomorrow

The nuclear year in review: Welcome to the antechamber of the next nuclear crisis

By François Diaz-Maurin | Nuclear Energy, Nuclear Risk, Nuclear Weapons

This is a photograph depicting a female, Culex quinquefasciatus mosquito, while resting. (Lauren Bishop / CDC)

Best biosecurity coverage of 2024

By Matt Field | Biosecurity

glacier with and without efforts to rein in climate change

The best of the Bulletin’s bimonthly magazine, 2024

By Dan Drollette Jr | Analysis, Biosecurity, Climate Change, Nuclear Energy, Nuclear Weapons, Special Topics

Finnish President Urho Kekkonen (left) and Swedish Prime Minister Olof Palme checking their watches during a meeting in 1975

The rise and fall of Sweden’s nuclear disarmament advocacy

By Naman Karl-Thomas Habtom | Nuclear Risk, Nuclear Weapons

"Experience Day" at Offutt Air Force Base's petting zoo, 2017.

Emerging experts of 2024: Fresh thinking about the military (and TikTok)

By Dawn Stover | Analysis, Voices of Tomorrow

Seven noteworthy stories about potential progress on climate change in 2024

By Jessica McKenzie | Climate Change

January issue: Nuclear materials, their enduring risks and new challenges

By Bulletin Staff | Nuclear Energy, Nuclear Risk

firefighter in silhouette with multiple fires in background

‘Not enough firefighters’: Historic wildfires rage unabated in Southern California

By Jessica McKenzie | Climate Change

Why US sanctions against Pakistan’s ballistic missile program might backfire

By Syed Ali Zia Jaffery | Nuclear Weapons, Opinion

How Fukushima’s radioactive fallout in Tokyo was concealed from the public

By François Diaz-Maurin | Investigative Reporting, Nuclear Energy, Nuclear Risk

United States nuclear weapons, 2025

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

Trump has a fighting chance to prevent Arctic meltdown. He should take it.

By Durwood J. Zaelke, Paul Bledsoe | Climate Change

What a second Trump administration may mean for the Saudi nuclear program

By Nour Eid | Nuclear Risk, Voices of Tomorrow

two firefighters spraying burning buildings with hoses with a destroyed building in flames in the background

Spreading like wildfire: How Trump’s misinformation about water and fire in Los Angeles inflames the situation

By Peter Gleick | Climate Change

The walls have eyes: How Trump plans to supercharge border security with tech

By Petra Molnar | Disruptive Technologies

The nuclear year in review: Welcome to the antechamber of the next nuclear crisis

By François Diaz-Maurin | Nuclear Energy, Nuclear Risk, Nuclear Weapons

This is a photograph depicting a female, Culex quinquefasciatus mosquito, while resting. (Lauren Bishop / CDC)

Best biosecurity coverage of 2024

By Matt Field | Biosecurity

An advertisement shows the most recent Bulletin magazine issue cover with text that reads, “Discover how Fukushima’s radioactive fallout was hidden from the public. Learn about the enduring risks and new challenges of nuclear materials in the latest issue of the Bulletin’s magazine.” A button below it reads, “Subscribe to start reading.”

An advertisement shows the most recent Bulletin magazine issue cover with text that reads, “Discover how Fukushima’s radioactive fallout was hidden from the public. Learn about the enduring risks and new challenges of nuclear materials in the latest issue of the Bulletin’s magazine.” A button below it reads, “Subscribe to start reading.”

Recent highlights

What’s causing the mysterious outbreak in Congo?

By Matt Field | Biosecurity

ranian President Masoud Pezeshkian speaks during a visit to the shrine of the Islamic Republic's founder Ayatollah Ruhollah Khomeini in Tehran on July 6, 2024. Pezeshkian, who advocates improved ties with the West, on July 6 won a runoff presidential election against ultraconservative Saeed Jalili, the interior ministry said. (Photo by ATTA KENARE / AFP via Getty Images)

Trump’s chance for a major breakthrough in Iran-West relations

By Seyed Hossein Mousavian | Nuclear Risk, Nuclear Weapons

Lysenko, Mbeki, and RFK Jr.: Leaders who shun science will face predictably bad results

By Georgios Pappas | Biosecurity

Three Mile Island

Congress wants to turn the nuclear regulator into the US industry’s cheerleader—again

By Victor Gilinsky | Nuclear Energy, Opinion

The Bulletin interactive

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

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Virtual Tour: Turn Back the Clock

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Doomsday Dashboard

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Nuclear Arsenals of the World

The Doomsday Clock timeline.

Doomsday Clock Timeline

What's new at the Bulletin

Apply to be a 2025 Bulletin Editorial Fellow

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Join us for the 2025 Doomsday Clock Announcement

Denver-based writer and national security researcher Collin Van Son is the recipient of the Bulletin’s 2024 Leonard M. Rieser award for his article, “Dispatch from a nuclear petting zoo.”

Congratulations to the Bulletin’s 2024 Rieser Award recipient

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