Truman Threatens Japan With Atomic Attacks (0:25)
In his radio address to the American people, on August 9, 1945, President Harry Truman speaks about the Hiroshima bombing, and reasserts his threat to use additional atomic bombs against Japan until it surrenders.
Speeches & Audio (1)
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Truman Threatens Japan With Atomic Attacks
Truman Threatens Japan With Atomic AttacksAudio Clip (0:25)
Audio Clip (0:25)
In his radio address to the American people, on August 9, 1945, President Harry Truman speaks about the Hiroshima bombing, and reasserts his threat to use additional atomic bombs against Japan until it surrenders.
Videos (13)
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Manhattan Project
Manhattan ProjectVideo Clip (3:09)
Video Clip (3:09)
Explore the top-secret American project to build the world's first atomic bomb.
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Coroner's Report: Atomic Bomb
Coroner's Report: Atomic BombVideo Clip (2:17)
Video Clip (2:17)
In August 1945, the United States dropped two atomic bombs over the Japanese cities of Hiroshima and Nagasaki. What happened to people on the fringes of the blasts?
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Atomic Bomb Assembled
Atomic Bomb AssembledVideo Clip (1:22)
Video Clip (1:22)
Watch actual footage of the first atomic bomb being prepared by U.S. engineers in 1945.
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Einstein and the Atom Bomb
Einstein and the Atom BombVideo Clip (2:37)
Video Clip (2:37)
History takes a closer look at one of the greatest minds the world has ever seen. Find out what you have always wanted to know about Albert Einstein.
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Atoll Atomic Test Explosion
Atoll Atomic Test ExplosionVideo Clip (0:47)
Video Clip (0:47)
This atomic explosion History Channel video shows the ramifications of a nuclear test off of Hawaii. The shots are of a nuclear experiment done by the Department of Energy known as the DOE.
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Atomic Test Explosions
Atomic Test ExplosionsVideo Clip (1:26)
Video Clip (1:26)
Shots of a test nuclear explosion in Hawaii. | Courtesy of the Department of Energy Nevada Operations Office
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Einstein Letter Advocates Atomic Bomb
Einstein Letter Advocates Atomic BombVideo Clip (3:46)
Video Clip (3:46)
In this "10 Days" video, learn how with the stroke of a pen, Albert Einstein, one of the greatest physicists in history, changed the world. On July 16, 1939, Einstein signed a letter urging President Franklin D. Roosevelt to develop the atomic bomb.
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Rare Color Films Document Atomic Bomb
Rare Color Films Document Atomic BombVideo Clip (2:44)
Video Clip (2:44)
An in-depth look at the events surrounding the dropping of atomic bombs on Hiroshima and Nagasaki, and ultimately, Japan's surrender in World War II.
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Cities of the Underworld 3: A-Bomb:Tunnels
Cities of the Underworld 3: A-Bomb:TunnelsVideo Clip (2:25)
Video Clip (2:25)
In late 1944, approximately 6,000 laborers were able to complete nearly 80% of an underground fortress designed to protect Emperor Hirohito.
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Cities of the Underworld: A-Bomb Underground
Cities of the Underworld: A-Bomb UndergroundVideo Clip (2:33)
Video Clip (2:33)
Check out a scene from the new season of Cities of the Underworld, only on The History Channel.
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Cities of the Underworld 3: A-Bomb: Geo Cites
Cities of the Underworld 3: A-Bomb: Geo CitesVideo Clip (2:17)
Video Clip (2:17)
Geo cites sit 180 feet beneath the surface of Tokyo to protect the city from the affects of a major earthquake.
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Cities of the Underworld 3: A-Bomb: G Cans
Cities of the Underworld 3: A-Bomb: G CansVideo Clip (2:34)
Video Clip (2:34)
Don Wildman explores the inner workings of the G-cans, Japan's answer to monsoon flooding.
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How Close was Hitler to the A-Bomb?
How Close was Hitler to the A-Bomb?Video Clip (3:45)
Video Clip (3:45)
How close was Hitler to launching a nuclear attack against the Allies in World War II? After developing a V2 ballistic missile capable of reaching as far a New York, Hitler made nuclear development his highest priority.
Photo Galleries (4)
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Hiroshima and Nagasaki
Hiroshima and Nagasaki(12 Photos)
12 Photos
See pictures from the bombings of Hiroshima and Nagasaki during World War II.
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End of World War II
End of World War II(8 Photos)
8 Photos
View pictures from VE day and VJ day as Americans celebrate the end of World War II.
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Axis Military Leaders
Axis Military Leaders(12 Photos)
12 Photos
View images of Axis military leaders from World War II.
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World War II Damage and Destruction
World War II Damage and Destruction(7 Photos)
7 Photos
View photos of the damage and destruction from World War II.
Interactives (1)
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Inside WWII
Inside WWIIInteractive
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Read More about The Bombing of Hiroshima and Nagasaki
In August 1945, American B-29 bombers dropped two atomic bombs over Japan, ending World War II and inaugurating the Atomic Age.
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