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

Mars Attacks: How Elon Musk’s plans to colonize Mars threaten Earth

By Kelly Weinersmith, Zach Weinersmith | Disruptive Technologies, Special Topics, Technology and Security
orange sunset through smog

Reach for the Stardust? Former Israel Atomic Energy Commission official leads controversial geoengineering start-up

By Ramin Skibba | Climate Change

Biden opened the door to missile proliferation. Trump should close it

By Debak Das | Nuclear Risk

We’re back: How tuberculosis is set to surge globally once again

By Erik English | Biosecurity
a bitcoin mining farm

Is bitcoin driving a green transformation, or fueling a mirage?

By Maximilian Gill, Jona Stinner, Marcel Tyrell | Climate Change

Are the United States and Europe still allies? The European public doesn’t think so

By Lauren Sukin, Michal Smetana, Marek Vranka, Ondrej Rosendorf | Nuclear Risk
An open laptop with a Russian flag on the screen

Russian networks flood the Internet with propaganda, aiming to corrupt AI chatbots

By Annie Newport, Nina Jankowicz | Artificial Intelligence, Disruptive Technologies

Maine senator grills intelligence director Gabbard on omission of climate change from annual threat report 

By Jessica McKenzie | Climate Change

To prevent Iran’s nuclear breakout, Trump must confront a messy reality: diplomacy

By Amy J. Nelson | Nuclear Weapons

The US hypocrisy about Israel’s nuclear weapons must stop

By Victor Gilinsky, Leonard Weiss | Nuclear Weapons, Opinion

Biosecurity community divided over best ways to mitigate risks

By Anemone Franz | Analysis, Biosecurity, Voices of Tomorrow
smoke from Amazon wildfire

Carlos Nobre on tipping points in the Amazon rainforest

By Dan Drollette Jr | Climate Change

orange sunset through smog

Reach for the Stardust? Former Israel Atomic Energy Commission official leads controversial geoengineering start-up

By Ramin Skibba | Climate Change

Are the United States and Europe still allies? The European public doesn’t think so

By Lauren Sukin, Michal Smetana, Marek Vranka, Ondrej Rosendorf | Nuclear Risk

Mars Attacks: How Elon Musk’s plans to colonize Mars threaten Earth

By Kelly Weinersmith, Zach Weinersmith | Disruptive Technologies, Special Topics, Technology and Security

Chinese nuclear weapons, 2025

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

Biden opened the door to missile proliferation. Trump should close it

By Debak Das | Nuclear Risk

We’re back: How tuberculosis is set to surge globally once again

By Erik English | Biosecurity

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

Alex Bell, President and CEO of the Bulletin of the Atomic Scientists.

Alexandra Bell to join  Bulletin as President & CEO

Rachel Bronson

Video: A message from Rachel Bronson

Members of the Bulletin of the Atomic Scientists’ Science and Security Board and Juan Manuel Santos, chair of The Elders and former president of Colombia, announce the setting of the Doomsday Clock on January 28, 2025 at the United States Institute of Peace in Washington, D.C. It is now 89 seconds to midnight. Left to right: Daniel Holz, Herb Lin, Juan Manuel Santos, Robert Socolow, and Suzet McKinney. (Photo by Jamie Christiani/Bulletin of the Atomic Scientists)

PRESS RELEASE: Doomsday Clock set at 89 seconds to midnight, closest ever to human extinction

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