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The presence of a centralized repository intended to be undisturbed for thousands of years would have given pause to federal plans for ...

A robot tasked with searching the wreckage inside Fukushima Daiichi's Unit 2 reactor has retrieved a sample of melted nuclear fuel.

A robot that has spent months inside the ruins of a nuclear reactor at the tsunami-hit Fukushima Daiichi plant delivered a tiny sample of melted nuclear fuel, in what plant officials said was a step ...