It's only a matter of time before terrorists target a big city with an explosive that includes radioactive material.
The world’s fastest-growing atomic power industry slowed but didn’t stop in reaction to Fukushima.
If North Korea restarts its nuclear facilities, the near-term threat will change little, but the possibility that the country could eventually enlarge its nuclear arsenal grows.
How the North Korean nuclear test confirms the world's ability to monitor the Comprehensive Test Ban Treaty.
The International Atomic Energy Agency retroactively changes 47 nuclear reactors from "in operation" to "long-term shutdown."
The Bulletin's Science and Security Board announces that the minute hand of the Doomsday Clock remains at five minutes to midnight. In this open letter to US President Barack Obama, the Board highlights what initiatives in 2013 could help turn back the Clock.
For the first time since 1946, Congress is seriously debating whether the US nuclear weapons complex should be under civilian or military control. It's a debate that may determine the size of the country's nuclear arsenal and the direction of its energy policy.
In early December, the US National Nuclear Security Administration conducted Pollux, the nation's 27th subcritical experiment since it ended nuclear tests in 1992. In this month's "Explain This," the Bulletin turns to Princeton's Frank von Hippel to provide background on these experiments.
What it means -- and doesn't -- that North Korea launched its Unha-3 rocket and successfully placed a satellite into orbit.
Atomic Comics tells the story of the nuclear age through the comic books that made it comprehensible to the masses, raising a provocative question: Could pop culture be the most effective method of warning the public about existential dangers?
A former colonel in the US Air Force recalls his efforts to prepare then-brand-new Titan I missiles based in Idaho for use during the Cuban Missile Crisis -- as his wife prepared to give birth to a son.
A former colonel of the Soviet Strategic Rocket Forces recalls the wrenching emotions he experienced as he helped to prepare a missile base in the Ural Mountains for an attack on the United States during the Cuban Missile Crisis.
Much is unknown about the way China protects the facilities and weapons-usable fissile materials in its nuclear weapons sector. But implementing some concrete, achievable improvements could provide assurances that vulnerabilities are minimized.
Current Science and Security Board and Board of Sponsors members -- those who together decide the time of the Doomsday Clock -- share their personal memories or personal reflections of the Cuban Missile Crisis.
An unassuming UN secretary-general from Burma enabled the United States and the Soviet Union to take a step back from the nuclear brink.
How a new framework for preliminary meetings could set the table for strengthening the Biological Weapons Convention.
With negotiations toward a new nuclear cooperation agreement in full swing, Seoul wants US consent for South Korean uranium enrichment. Washington is resisting.
Globalized trade allows water-poor countries to import food grown in water-rich countries, but climate change could disrupt this flow of "virtual water" and trigger food insecurity.