On this day in 1945, the world was changed forever when the USA dropped the first atomic bomb on the Japanese city of ...

An excerpt from a new book on the Hiroshima bombing, the world’s first atomic attack in 1945, and its key players ...

On August 6, 1945, a 10-foot-long uranium bomb called "Little Boy" was dropped on the Japanese city of Hiroshima.

Take an in-depth look at how the atomic bomb "Little Boy" worked, the first nuclear weapon ever used in warfare. Dropped on Hiroshima, Japan, on August 6, 1945, the bomb marked the beginning of ...