Inside a high-tech fusion reactor chamber, superheated plasma glows intensely, representing a breakthrough in clean energy technology.
Emerging Tech

South Korea's fusion reactor sustains 180M°F plasma for 48 seconds

South Korea's KSTAR device just sustained plasma at an astonishing 180 million degrees Fahrenheit for 48 seconds, breaking its own world record and inching closer to the dream of limitless clean energ

3 min read·June 8, 2026