radioactive iodine-131

A large number of dangerous radioactive particles appear scattered 7 European countries that scientists can not explain the cause.

Officials in some European countries have reported that they have detected a radioactive isotope in the air but have not found a source.

Groundwater in the area near the Fukushima nuclear plant was 10,000 times contaminated with safety, while radioactive iodine-131 in seawater rose to a new record threshold.