Across much of Fukushima’s rolling green countryside they descend on homes like antibodies around a virus, men wielding low-tech tools against a very (...)

 The No 3 reactor building at Tokyo Electric Power Co (Tepco)’s tsunami-crippled Fukushima Daiichi nuclear power plant in Fukushima prefecture last month.  Photograph: Kyodo/Reuters

Japanese researchers say the cost of cleaning up from the Fukushima nuclear disaster could top $50 billion (€37.7 billion), four times the amount esti(...)