Companies say they're closing in on nuclear fusion as an energy source. Will it work?
For decades, government scientists have toiled away trying to make nuclear fusion work. Will commercial companies sprint to the finish?
nuclear fusion
U.S. reaches a fusion power milestone. Will it be enough to save the planet?
A giant laser facility in Livermore, Calif., says it has created net energy from nuclear fusion. It's an important breakthrough, but fusion power remains a distant dream.