1 Unborn children may be exposed to Strontium-90 through drinking water and the diet of the mother.

2 Dmytro Melnychuk, rector of the national university, said: "Strontium-90, plutonium, and americium-241 are all extremely susceptible to upward atmospheric migration and dispersal via heat from fires.

3 These chemicals are radioactive Iodine, Cesium and Strontium-90, said Dr. Chesser.

4 These teeth were then tested to determine their level of Strontium-90, a radioactive fission product that escapes in nuclear power plant emissions.

5 Of the four radioactive materials released, Iodine-131 was gone after three months. But cesium-137 and strontium-90 both take about 30 years for their quantities to be halved.