The International Thermonuclear Experimental Reactor, ITER, now under construction in southern France, is often called the most complicated scientific instrument in the world. The project was launched in 1985 at the US-Soviet summit between Ronald Reagan and Mikhail Gorbachev. Its director says it is now 50% complete and on track to produce cheap energy from what will essentially be a tiny sun in its core. VOA’s George Putic reports.

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