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

"The modernization of China’s nuclear arsenal has both accelerated and expanded in recent years. In this issue of the Nuclear Notebook, we estimate that China now possesses approximately 620 nuclear warheads," writes staff of the Nuclear Information Project at @scientistsorg.bsky.social. ⬇️

Chinese nuclear weapons, 2026

The modernization of China’s nuclear arsenal has both accelerated and expanded in recent years. We estimate that China now possesses approximately 600 nuclear warheads, with more in production to arm…

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Read Bernice Yeung's investigation into how Silicon Valley tech firms remade United States defense contracting—and opened the Pentagon's checkbook wide open—below. ⬇️

The rise of the military-technology complex

How Silicon Valley tech firms remade US defense contracting. And then opened the Pentagon’s checkbook—wide.

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Tyler McBrien@tylermcbrien.com · 6h ago

Huge thanks to Bernice Yeung for joining me on the @lawfaremedia.org podcast to discuss her recent @thebulletin.org feature, "The Rise of the Military-Technology Complex," which traces the long, on-again off-again on-again relationship between Silicon Valley and the Pentagon.

The scariest movie film curator Rebecca Fons has ever seen is no Hollywood blockbuster. It's a 47-minute, black-and-white, 1960's pseudo-documentary that almost immediately disappeared—possibly because those who commissioned it thought the result "too horrifying for the medium of broadcasting."

A film about nuclear war “too horrifying for the medium of broadcasting”

The scariest movie I've ever seen is not a Hollywood blockbuster from the ‘90s, often referred to as “the golden age for disaster movies.” Instead, it’s something much less well-known: a 47-minute,…

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The Bulletin is honored to welcome Sharon Weinberger as editor-in-chief. She has been a writer and editor focusing on national security, science, and technology for over 25 years, and will guide the Bulletin's editorial efforts as it enters its eighth decade.

The Bulletin welcomes Sharon Weinberger as editor-in-chief

The Bulletin’s new editor-in-chief, Sharon Weinberger, has dedicated her career to covering the intersection of science, technology, and national security and will guide the Bulletin’s editorial…

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Lab-designed cells could someday be used in medicine, environmental cleanup, or manufacturing. But today's regulators aren't yet ready for the oversight challenges the coming era of synthetic cells may pose. Read more from David Gillum and Peter A. Carr. ⬇️

Is it a chemical? Is it alive? Oversight in the coming era of synthetic cells could be complicated

Lab-designed cells could someday be used in medicine, environmental cleanup, or manufacturing. Imagine spraying biosensing cells on a wall to test for hidden mold or swallowing a pill full of cells…

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A condition that Saudi Arabia normalize relations with Israel hasn't killed the nuclear agreement—only masked the fine print, writes Sharon Squassoni. Behind official claims that uranium enrichment is off the table, the US admin's deal risks dragging Washington straight into a trap.

The US-Saudi nuclear deal isn't dead—It's dragging Washington into nonproliferation quicksand

A condition that Saudi Arabia normalize relations with Israel hasn't killed the nuclear agreement—it has only masked the fine print. Behind official claims that uranium enrichment is off the table,…

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Released in 1997, Gattaca was a box-office disappointment. But it's become one of the most influential cultural texts to explore biotechnology and its social consequences, especially in a world where CRISPR-based gene editing and consumer genomics are becoming more common, writes David A. Kirby.

Gattaca and the quiet Doomsday of genetic determinism

Gattaca was a box-office disappointment when it was released in 1997. It has since become one of the most influential cultural texts to explore biotechnology and its social consequences, especially…

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US efforts to expand global nuclear exports threaten to spur a dangerous proliferation wave, write Logan Mintz and Matthew Sharp. To prevent the spread of weapons-usable technology, Washington must pair aggressive nuclear trade with creative fuel-sharing alternatives and tougher safeguards.

Balancing global uranium enrichment needs and proliferation risks: A framework

US efforts to rapidly expand global nuclear exports threaten to spur a dangerous proliferation wave. To prevent the spread of weapons-usable technology, Washington must pair aggressive nuclear trade…

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Matt Field @mattyfield.bsky.social reports that while plenty of hurdles remain for anyone hoping to use fast-improving AI to develop a bioweapon, one expert notes, 'Where we will find ourselves a year from now is likely to be, without intervention, a much more risky circumstance.'"

AI executives worry about their technologies aiding bioterrorists. How likely is that?

Plenty of hurdles remain for anyone hoping to use fast-improving AI to develop a bioweapon, but, as one expert notes, "Where we will find ourselves a year from now is likely to be, without…

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“Organizations ranging from the United Nations, to the Pope, to a consortium of nonprofits and academics known as Stop Killer Robots, decry the use of AI in warfare, especially in the deployment of lethal autonomous weapons.” Read more in a new investigative piece ⬇️

The rise of the military-technology complex

How Silicon Valley tech firms remade US defense contracting. And then opened the Pentagon’s checkbook—wide.

thebulletin.org