Giving a whole new meaning to underground power, startup Deep Fission Nuclear has secured US$30 million in funding to install a micro-reactor in a mile-deep borehole by July 4, 2026 as part of the US ...

Scientists have built the first-ever thorium reactor. Thorium is both more easily accessible and less dangerous than uranium—the most common fission fuel. The system also uses molten salt instead of ...

Back in the 1950s, the U.S. started detonating nuclear bombs underground to limit the fallout, both radioactive and sociopolitical, unleashed by aboveground testing. Hundreds of feet of rock formed a ...

Today’s pressurized water reactors (PWRs) are marvels of nuclear fission technology that enable gigawatt-scale power stations in a very compact space. Though they are extremely safe, with only the TMI ...

Deep Fission’s underground design Deep Fission says its underground design could be scaled up to provide a lot of energy with little space. It says, for example, that it could nestle 100 nuclear ...

California-based Deep Fission says it will install an underground reactor in Kansas. Deep Fission says it plans to install a nuclear reactor underground at an industrial park in southeast Kansas.