This swimming robot may have finally spotted melted nuclear fuel inside Fukushima

A robot swimming in the depths of one of Fukushima’s nuclear reactors may have spotted lumps of molten nuclear fuel inside. If it did, it would be the first robot to successfully locate the radioactive material, as efforts to clean up after the 2011 nuclear accident at the Fukushima Daiichi power plant in Japan continue.
This latest robotic investigator, nicknamed the Little Sunfish, was sent into the Unit 3 reactor for the first time on July 19th. That’s one of the three nuclear rea