Search Results | nuclear weapons

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How Nuclear Power Works

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On the one hand, nuclear power offers a clean energy alternative that decreases fossil fuel dependence. On the other, it summons images of quake-ruptured Japanese power plants leaking radioactive water. What happens in reactors in good times and bad?

How a Nuclear Meltdown Works

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Nuclear meltdowns can be scary, but it's important to understand what causes them. Learn about how nuclear meltdowns work.

Trinitite: How the First Nuclear Bomb Turned Sand to Glass

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Sand turned to glass at White Sands Missile Range. What do we know today about the remnants of the world's first nuclear blast?

Is North Korea Equipped to Attack the United States?

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The Kim Jong Un regime continues to demonstrate its desire to threaten the U.S. and its allies with nuclear-armed ICBMs. But can any of these missiles actually reach the U.S. mainland?

Tsar Bomba: The Most Powerful Nuclear Weapon Ever Built

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In 1961, the Soviet Union detonated the Tsar Bomba, still the biggest, most powerful nuclear bomb ever built. One of the cameramen who recorded the event said it sounded "as if the Earth has been killed."

How the Manhattan Project Worked

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The Manhattan Project was the code name used for the secret plan to develop nuclear weapons by the United States. Learn more about the Manhattan Project.

How Uranium Mining Works

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Thanks to our voracious appetite for energy, the element long linked with nuclear weapons is taking on a new role. Where does the hunt begin for uranium?

How Bunker Busters Work

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Bunker busters penetrate deep into fortified bunkers or underground compounds before exploding. Learn about bunker busters and how they’re used in combat.

What Does Russia's Partial Military Mobilization Mean?

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President Vladimir Putin ordered a partial mobilization in Russia during an address to the nation. What does that mean for citizens there and in Ukraine?

Doomsday Clock Now Closest It's Ever Been to Midnight

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The Bulletin of Atomic Scientists moved the Doomsday Clock to 90 seconds before midnight, the closest it's ever been to global catastrophe. What does this mean for humanity?

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