Strontium 90 was measured in Yokohama, Kouhokuku. In the simplest put, it’s over. The amount was 195 Bq/kg, detected by a university staff teaching engineering, so the measurement is trustworthy. It has nothing to do with the historical world-wide nuclear test, because it was measured on the roof of and apartment, which was built only 5 years ago. Now the test result was sent to Yokohama city government. Yokohama...