CHINA - MAY 17: A view of China's nuclear fusion device nicknamed the "Artificial Sun" in the Hefei Institute of Physical Science in Anhui, China, on Thursday, May 17, 2007. The structure is the world's first full superconducting tokamak device, called the Experimental Advanced Superconducting Tokamak (EAST). Fusion could offer a highly effective, safe and unexhaustable energy in the future. (Photo by Natalie Behring/Bloomberg via Getty Images)
