A view of the Wendelstein 7-X fusion reactor, as seen on September 18, 2015 at the Max Planck Institute for Plasma Physics in Greifswald, Germany. A twisting ribbon of hydrogen gas, many times hotter ...
Nuclear fusion promises a green and infinitely renewable supply of energy—if we can harness it. Fusion happens all the time inside the sun. But to recreate the process on Earth, we must control ...