North Korea says it fired long-range strategic cruise missiles into the sea to test the country’s nuclear deterrence, days ...

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 ...

The debut followed the North’s first test of a new surface-to-air missile and the arrival of a U.S. nuclear-powered attack ...

NOVA Core, built by Valar Atomics, achieved zero-power criticality at LANL's National Criticality Experiments Research Center.

Scientists at the Idaho National Laboratory (INL) have achieved a historic breakthrough in nuclear energy by launching ...

North Korea launches long-range cruise missiles ‘to test nuclear deterrence’ - Kim Jong Un says testing reliability of ...

BUSAN, South Korea (AP) — President Donald Trump appeared to suggest the U.S. will resume testing nuclear weapons for the first time in three decades, saying it would be on an “equal basis” with ...

BUSAN, South Korea — President Donald Trump appeared to suggest the U.S. will resume testing nuclear weapons for the first time in three decades, saying it would be on an “equal basis” with Russia and ...

India reportedly tested a nuclear-capable submarine-launched ballistic missile this week. The test launch, not officially ...

On Oct. 30, 2025, President Donald Trump ordered the United States to resume nuclear weapons testing for the first time since the early 1990s, arguing the move was necessary to keep pace with Russia ...

From Russia’s floating reactors to China’s 100-year battery, these seven milestones shaped the global nuclear energy outlook ...

A second B-21 Raider bomber has flown for the first time in California, the Air Force announced Thursday, a milestone officials say will accelerate testing of America’s first new long-range bomber in ...