Oak Ridge is becoming America's nuclear energy core, with TVA and Kairos Power building advanced reactors to provide power.

The Iran war ground through 12th day as uncertainty grew over when it might end, amid continued attacks, a mounting human toll and concerns over the economic and energy impacts.

Even if Washington embraces small modular nuclear reactors to alleviate its carbon-free energy needs, it will take years to flip the switch, analysts say. Why it matters: Energy Northwest, the public ...

Although President Trump has claimed Iran was weeks away from developing a nuclear weapon, much more work was needed for the country to do so ...

The evidence contradicts President Trump’s claim that Iran was responsible for a strike at the school that killed 175 people, ...

A new study explains how some supernovas are particularly dazzling—the glow from a magnetic, spinning ball of neutrons called a magnetar. An assist from Einstein is what settled the case ...

State media said Kim Jong Un had visited a factory producing light arms as he pushes to modernize North Korea’s conventional forces after years of focus on nuclear weapons.

The investigative group Bellingcat says newly released video “appears to contradict” U.S. President Donald Trump’s claim that Iran was responsible for an explosion at an Iranian school that killed ...

If confirmed, it would represent one of the worst civilian casualty incidents for the U.S. military in recent decades.

Children living through the latest war in the Middle East or seeing images of the conflict may need help making sense of events that ...