Nuclear weapons haven’t been tested in the United States since 1992. Find out why, and what could happen if the hiatus ends.

Two billion years before we made history and split the atom, the Earth had already accomplished it and was running its own ...

GREIFSWALD, GERMANY - OCTOBER 29: A worker explains a photo taken about a year and a half ago that shows construction of the interior plasma chamber of the Wendelstein 7-X experimental fusion reactor ...

A company with a vision of installing “discreet, bespoke,” small, nuclear reactors 1 mile underground for data centers and other electricity-hungry industries plans to put its first reactors in Kansas ...

Nuclear power has a lot of potential, but many fear the dangers of nuclear meltdowns. Fortunately, some new reactors might make that possibility even slimmer.

Deep Fission is betting that the safest place for a nuclear reactor is not behind thicker concrete walls but a mile beneath our feet. The California startup wants to sink compact power plants into ...

Parsons, Kansas, may be the site of a California startup’s first ever 1-mile-deep nuclear reactor — with support from county commissioners, both Republican Kansas U.S. senators and Democratic Gov.

A company with a vision of installing “discreet, bespoke,” small, nuclear reactors 1 mile underground for data centers and other electricity-hungry industries plans to put its first reactors in Kansas ...