On August 21, 1945, six days after Japan surrendered and 12 days after the bombing of Nagasaki, the unused demon core (which had not yet earned its deadly moniker) was used in a test to see how close ...

I think we can all agree that the physicists, engineers, and chemists who worked on the Manhattan Project -- which ultimately ended World War II -- were consummate geniuses and paragons of ...

A plutonium core from the Manhattan Project became deadly when two laboratory accidents exposed scientists to fatal radiation ...