For decades, the dream of a virtually limitless, clean energy source has hovered just out of reach, more science fiction than ...

Nuclear fusion holds the potential for clean, greenhouse gas-free baseload power, but challenges in controlling plasma have hindered its commercial viability. Recent breakthroughs, particularly with ...

In February, France's WEST nuclear fusion reactor made a big step toward getting clean, star-like energy for everyone. The machine held superheated plasma for 1,337 seconds, or just over 22 minutes.

Once a government-led pursuit, nuclear fusion is now a private-capital race, much of it financed by the same people building AI.