Robot probes sent to one of Japan's wrecked Fukushima nuclear reactors have suggested worse-than-anticipated challenges for the plant's ongoing cleanup. The plant's operator Tokyo Electric Power Co.

TOKYO (AP) — An underwater robot entered a badly damaged reactor at Japan’s crippled Fukushima nuclear plant Wednesday, capturing images of the harsh impact of its meltdown, including key structures ...

Preliminary examinations over the past few weeks have detected structural damage Preliminary examinations over the past few weeks have detected structural damage Robot probes sent to one of Japan's ...