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How a wall light switch timer can save energy and pay for itself in less than a year.

Inspired by the promise of vastly increased flight durations, the Russian and American militaries experimented with nuclear powered aircraft for two decades, but the concept never progressed beyond a handful of trials. Lockheed Martin's Skunk Works claims to have the solution in its grasp, unveiling plans for a compact nuclear fusion generator that could power everything from aircraft to naval vessels within ten years.