Over the last several years, fusion power has gone from the butt of jokes — always a decade away! — to an increasingly tangible and tantalizing technology that has drawn investors off the sidelines.

During the Cold War, the U.S. and the Soviet Union competed across nearly every arena, including space. The rivalry shifted dramatically on Oct. 4, 1957, when the U.S.S.R. launched Sputnik, the ...

The sun-mimicking technology known as nuclear fusion hopes to create “limitless” energy by smashing light nuclei together using immense heat, but containing such hot plasma is proving tricky. A ...

Journal Editorial Report: The year's best from Kim Strassel, Kyle Peterson, Mary O'Grady, Dan Henninger and Paul Gigot. Photo: VATICAN MEDIA/Zuma Press Will fusion reactors soon deliver emissions-free ...

FLYING CARS have been humanity’s dream since European futurists mused about them at the dawn of the automobile age in the late 19th century. Time and again humanity has been disappointed. “We wanted ...