Hard hit by the shaking ground and surging waters, the Fukushima Daiichi Nuclear Power Station suffered catastrophic equipment failures, nuclear meltdowns and radioactive releases when it was struck earlier this year by the massive earthquake and the resulting tsunami that pummeled Japan's coast. All told, the disaster is the worst nuclear accident since ChernobylIn the U.S., that catastrophe has triggered some to rethink the country's dependence on nuclear power.