The good news? It lasts for a century. The bad news? It delivers barely enough current to run a wristwatch. Still, one day we may have access to something that will deliver a useful amount of power. Though, one can only imagine the Customs headaches that would arise from having anything "nuclear" aboard.
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"Life moves pretty fast. You don't stop and look around once in a while, you could miss it."
--Ferris Bueller