Agence France-Presse: The operator of Japan's battered Fukushima nuclear power plant has said it is having trouble with the early stages of an ice wall being built under broken reactors to contain radioactive water.
Tokyo Electric Power (Tepco) has begun digging the trenches for a huge network of pipes under the plant through which it intends to pass refrigerant.
This will freeze the soil and form a physical barrier that is intended to prevent clean groundwater flowing down mountainsides from mixing with contaminated...