Energy security

Nuclear war on the Hill

Ambitious science projects frequently crash into funding rocks, and nuclear fusion is a particularly vexing problem for politicians. More than four decades have been spent trying to turn the reaction that fuels stars and H-bombs into a viable source of energy. Is it worth shelling out ever more on a very risky bet with a big potentialpayoff — a step towards securing the world’s, not to mention the country’s, energy future?