Only about 3.5% of radioactive material from one reactor was released (there were four reactors). Also no large city happened to be close enough downwind. Some

Only about 3.5% of radioactive material from one reactor was released (there were four reactors). Also no large city happened to be close enough downwind. Some of the areas within 30 km exclusion zone still have levels of radiation too high for people to live there, and will remain high for hundreds of years.