Need a bit of holiday cheer? Physicist and climate expert Joe Romm has you covered.

Even in the Iran nuclear deal’s weakened state, it continues to provide permanent solutions to potential proliferation concerns. Its revival can further cement these gains as a “longer and stronger” deal is sought.

North Korea’s March 25 test of two short-range ballistic missiles unambiguously violated UN Security Council resolutions, and any miscalculation involving these missiles could escalate into nuclear war. Formulating a smart response to each North Korean provocation and nuclear weapons advancement is certainly important, but Washington must get out ahead of Pyongyang’s game plan by developing an overarching strategy.

There is little military rationale for South Korea to build nuclear-powered submarines, and pursuing them may not be worth the costs.

A novel coronavirus emerged in Wuhan, China late last year, hopping in one way or another from other animals to humans. Initially the rest of the world thought this outbreak was a local problem and then was shocked at the brutality of the lockdown that the Chinese authorities clamped on Wuhan to quarantine the infection … Continued

Albert Einstein noted, “Mankind invented the atomic bomb, but no mouse would ever construct a mousetrap.” We humans have created the equivalent of a mousetrap for ourselves. And we’ve constructed tens of thousands of them over the seven decades of the Nuclear Age.

In a new essay for the New York Review of Books, the Rockefeller Family Fund is escalating its feud with the oil giant ExxonMobil, weaving a damning narrative of a firm that accepted climate science in private while questioning it in public.

The following is a keynote address by Gareth Evans at the Bulletin of the Atomic Scientists’ Annual Clock Symposium, convened in Chicago on November 16, 2015.

Anyone familiar with the history of the Biological and Toxin Weapons Convention (BWC) will know that for years participants in BWC meetings have spoken about the importance of education in preventing the malevolent dual-use of biological technologies. Yet for all the bluster, the practical results regarding, for example, scientists' understanding of the convention and their obligations under it, have been limited.

One issue was conspicuously absent at last week’s three-hour long Democratic debate: climate change. But some of the candidates actually did have things to say.

Washington’s nuclear weapons cognoscenti don’t seem to see past Beltway politics and Russia.

The most problematic aspect of a microreactor concept promoted by the nuclear energy start-up Oklo Inc. is its proliferation implications. Simply put, Oklo’s concept could increase the availability of fissile materials needed for nuclear weapons and, therefore, the likelihood that bad actors would acquire those materials.

The separation of plutonium by civilian reprocessing has far exceeded plutonium use in breeder and light-water reactor fuel with the result being a global stockpile of over 300 tons of civilian but weapon-usable plutonium. By the International Atomic Energy Agency’s metric, this is enough for almost 40,000 Nagasaki bombs.

It has been 100 years since the end of World War I, the “war to end all wars,” which set the precedent for modern biological warfare. The 1925 Geneva Protocol subsequently banned the use of biological weapons in war but did not stop the proliferation of state-sponsored bioweapons programs. With the spread of such programs … Continued

With climate science under attack at the federal level, safeguarding the integrity of climate education in the classroom is more important than ever.

Right-wing TV network Newsmax's White House correspondent is using her post to spew some of the most ludicrous anti-vaccine content imaginable.