Though the scientists who developed the atom bomb did not believe it should be used to end World War II, American President Harry S. Truman and British Prime Minister Winston Churchill were of like mind in their decision to drop the bomb...

Uranium 235 has a half-life of over 700 million years and is the fuel used in the atomic bomb dropped on Hiroshima, Japan. Pupils see the half-lives and decay rates of Carbon-14 and Uranium-238. They also take measurements of these two...

Features interesting facts about the Hiroshima and Nagasaki bombing in 1945.