Fusion reactions are the same source that power stars -- where hydrogen atoms smash and fuse together into helium creating a ...

A Knoxville-based fusion powerhouse says it's solved the fundamental science of harnessing the sun's power to produce ...

The fusion reaction is the primordial alchemical trick that powers our sun, propels spacecraft in science-fiction novels and ... or traditional nuclear (fission) power plant.

But now, with net-positive fusion power no longer the stuff of science fiction, a fresh crop of startups have been founded on more mundane questions: Can reactors be built for less money?