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Manhattan Project (3:09)

Explore the top-secret American project to build the world's first atomic bomb.

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Videos (17)

  • Manhattan Project
    Manhattan Project

    Video Clip (3:09)

    Explore the top-secret American project to build the world's first atomic bomb.

    Video Clip (3:09)
  • Coroner's Report: Atomic Bomb
    Coroner's Report: Atomic Bomb

    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?

    Video Clip (2:17)
  • Atomic Bomb Assembled
    Atomic Bomb Assembled

    Video Clip (1:27)

    What did the world's first atomic bomb look like and how was it assembled? Watch actual footage of the bomb being prepared by U.S. engineers in 1945. From History Uncut.

    Video Clip (1:27)
  • Cold War
    Cold War

    Video Clip (2:31)

    The Cold War is over, but what it left behind may surprise you.

    Video Clip (2:31)
  • Atomic Test Explosions
    Atomic Test Explosions

    Video Clip (1:26)

    Shots of a test nuclear explosion in Hawaii. | Courtesy of the Department of Energy Nevada Operations Office

    Video Clip (1:26)
  • Rare Color Films Document Atomic Bomb
    Rare Color Films Document Atomic Bomb

    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.

    Video Clip (2:44)
  • Einstein and the Atom Bomb
    Einstein and the Atom Bomb

    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.

    Video Clip (2:37)
  • K-25 Plant Produces Uranium
    K-25 Plant Produces Uranium

    Video Clip (3:25)

    During WWII the U.S. built a top secret nuclear processing plant called Y-12.

    Video Clip (3:25)
  • Atomic Test Explosions 1948
    Atomic Test Explosions 1948

    Video Clip (1:36)

    Shots of a test nuclear explosion in Hawaii. | Courtesy of the Department of Energy Nevada Operations Office

    Video Clip (1:36)
  • Nuclear Missile Defensive Systems
    Nuclear Missile Defensive Systems

    Video Clip (2:15)

    In a Mail Call video, R. Lee Ermey answers a question from Doug of Texas who wants to know what Star Wars is. Ermey is going to assume that Dougs talking about our NMD, Nuclear missile defensive systems, and not movies that he hasnt been in!

    Video Clip (2:15)
  • Castro Urges Nuclear Attack on America
    Castro Urges Nuclear Attack on America

    Video Clip (2:06)

    During the Cuban Missile Crisis of October 1962, America and the Soviet Union were on the brink of nuclear armageddon. What happened when Cuba's Fidel Castro urged the Soviets to attack first? From Declassified Castro.

    Video Clip (2:06)
  • Einstein Letter Advocates Atomic Bomb
    Einstein Letter Advocates Atomic Bomb

    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.

    Video Clip (3:46)
  • Nuclear Winter
    Nuclear Winter

    Video Clip (2:26)

    This Life After People video clip explores Carl Sagan's theory of nuclear winter and how this phenomenon, triggered by a nuclear war, could extinguish all life on Earth by blocking the Sun's rays.

    Video Clip (2:26)
  • Nuclear Subs: Deterrence And Risk
    Nuclear Subs: Deterrence And Risk

    Video Clip (3:23)

    Nuclear submarines are priceless military jewels which are owned and operated by only a handful of countries. They act as a deterrence, carrying missiles topped with nuclear warheads that can wipe out entire countries. Learn about the risks in this Modern Marvels video.

    Video Clip (3:23)
  • Bombing of Hiroshima and Nagasaki
    Bombing of Hiroshima and Nagasaki

    Video Clip (3:29)

    Japan formally surrenders on September 2, 1945, after nearly 200,000 people were killed by two separate atomic bombings during World War II.

    Video Clip (3:29)
  • This Day In History: 08/06/1945 - Atomic Bomb Hits Hiroshima
    This Day In History: 08/06/1945 - Atomic Bomb Hits Hiroshima

    Video Clip (1:03)

    This Day in History, August 6th. President Harry Truman orders the Enola Gay to drop the atom bomb on Hiroshima, Cy Young joined major league baseball, the first woman swims the English Channel, and Jamaican independence is declared.

    Video Clip (1:03)
  • How Close was Hitler to the A-Bomb?
    How Close was Hitler to the A-Bomb?

    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.

    Video Clip (3:45)

Photo Galleries (1)

  • Hiroshima and Nagasaki
    Hiroshima and Nagasaki

    12 Photos

    See pictures from the bombings of Hiroshima and Nagasaki during World War II.

    (12 Photos)

Speeches & Audio (1)

  • Cold War Arms Race
    Cold War Arms Race

    Audio Clip (2:23)

    On March 21, 1960, U.S. Vice Admiral Hyman Rickover discusses the importance of keeping abreast of Soviet technological developments.

    Audio Clip (2:23)

Interactives (1)

Read More about Atomic Bomb

Nuclear weapons had a profound and lasting impact on war and international relations in the 20th century.

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