The scientists achieved this sustained nuclear reaction, the first created by humans ... After a series of smaller experiments to prove the concept, work began on the reactor that would actually ...

These shifts have been great for existing nuclear plants. We’re seeing efforts to boost their power output, extend the lifetime of old reactors, and even reopen facilities that have shut down.

If scientists can get nuclear fusion reactors to work, it could unlock the secret to providing our society with unlimited clean, renewable energy. Although researchers aren't there yet ...