Radioactive strontium has been detected in soil and plants, beyond the 30km (18.6 miles) zone around Fukushima Daiichi.

Strontium 90 is produced by nuclear reactors.  It’s half life is about 29 years.  It is absorbed by your bones, leading to disorders such as bone cancer.

Officially, this is the first time the detection of strontium has been announced. The samples were taken on 15 & 16 March.  There have been several nuclear analysts who said not all types of radiation where being reported to the public!