CERN scientists have laid out a $40 billion vision to build a reactor 4 times larger than the LHC.
The Wendelstein 7-X reactor has broken records for the highest plasma and energy density from fusion.
Critics are unsure that money thrown at fusion will prove a commercially-viable energy source.
China, India, Japan, Korea, Russia & US have contributed nine percent each to the project: Report
The physics & design of ITER's core prevents the possibility of a meltdown-type accident: Official.