Japan's Fukushima city is to give radiation dosimeters to 34,000 children to measure their exposure from the tsunami-hit nuclear power plant.
All children aged between four and 15 will wear the devices for three months, and data will be collected monthly.
The city lies about 60km (37 miles) from the Fukushima Daiichi plant, which was badly damaged in the 11 March quake and tsunami.
More than three months on the facility is still leaking radioactive material. Fukushima city officials said dosimeters would be given to children to wear from September.
The devices will also be distributed to those with children under three years at the request of parents.
The city is outside the 20km (12-mile) no-go zone around the nuclear plant, but many residents are concerned about radiation.
more BBC News
