The U.S. altered the course of history 80 years ago when it dropped the atomic bomb on Japan. It was an audacious move that ultimately led to the end of World War II. The motivation and secrecy ...

It’s been 80 years since the United States detonated atomic bombs over Hiroshima and Nagasaki, resulting in more than 200,000 deaths. Garrett Graff’s new book The Devil Reached Toward the Sky is an ...

Here’s a look back at what happened in the Chicago area on Aug. 6, according to the Tribune’s archives. Is an important event missing from this date? Email us. A cluster of balloons are released from ...

"Written at the request of Maj. Gen. L. R. Groves, U.S.A." "This book is a republication, with the modifications detailed in the author's preface, of the official report issued by the Manhattan ...

Many Americans—including students in the History of the Atomic Bomb course taught at the University of Texas at Austin by Bruce J. Hunt, A&S '84 (PhD)—have learned a version of this story: On Aug. 6, ...

When it comes to marking anniversaries of the atomic bomb, there are a few obvious choices. July 16, 1945, was the date of the Trinity test, the first nuclear explosion, and has been used by some as ...

Editor’s note: The Bulletin of the Atomic Scientists presents here, from its September 1946 issue, an eyewitness account of the first atomic bomb test in the Marshall Islands. In it, the author not ...

On August 6, 1945, the United States dropped an atomic bomb on Hiroshima, Japan. That first-ever use of an atomic weapon killed an estimated 140,000 people in all, most of whom were civilians. Three ...