Seventy-one years have passed since the bombing of Nagasaki, 9 August 1945,
where the plutonium bomb “Fat Man” killed 60,000 to 80,000 people.
Cleanup of radioactive materials at the Hanford Site, next to the Columbia River
in the middle of the state of Washington, continues to be a problem.
See also in The book of science:
Readings on wikipedia: