It's been one week since the most powerful earthquake ever recorded in Japan unleashed a devastating tsunami. The twin disasters caused major damage to a nuclear power plant in northeastern Japan, adding a brewing nuclear crisis to the country's woes.

As Japan's nuclear crisis continues to unfold, you've probably heard mention of Tokyo Electric Power Company, the energy giant who owns the troubled Fukushima plant. Known as Tepco, the company was founded in 1951 as Japan looked to rebuild its…

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