A small US nuclear startup has quietly crossed a threshold that most young fission companies only talk about, achieving a self-sustaining chain reaction in a test system without ever boiling water or ...

After years in the wilderness, it’s a good time to be a nuclear startup. “For the first half a decade that I was telling people I was doing nuclear, I had to convince them, ‘Hey, here’s why nuclear is ...

As China continues to expand its nuclear capabilities, and Russia and the U.S. walk away from arms control, the future is terrifying: a new nuclear arms race, with more players, and less ...

There are still strong incentives to negotiate reductions in nuclear arsenals between the United States, Russia, and China. The expiration of the New START agreement this month is a critical and ...