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What Are 'Low-yield' Nuclear Weapons?

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The Trump administration wants to develop a new generation of low-yield nuclear weapons that could be used without launching an all-out nuclear war.

Is it possible to run a nuclear test without producing radioactive fallout?

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In what may prove to be the first nuclear explosion since 1998, North Korea claims it has conducted an underground test of a nuclear weapon.

How Nuclear Submarines Work

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Nuclear submarines are powered by nuclear reactors and may carry nuclear weapons. Read about nuclear submarines and how they changed the world's oceans forever.

How Nuclear Bombs Work

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Nine countries hold the 13,000 nuclear weapons in the global stockpile. That's less than during the Cold War but it doesn't change the fact that these bombs are still a threat to global humanity. So how do they work and are we close to nuclear war?

What would nuclear winter be like?

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If the sight of a mushroom cloud burning above the horizon suggests that the nuclear weapon-equipped world might end with a bang, then nuclear winter presents the notion that post-World War III humanity might very well die with a whimper.

How do scientists determine if a nuclear blast has occurred?

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In the first reports released since North Korea announced its underground nuclear test on Monday, officials are saying they have found no evidence of a nuclear signature in the air above the blast site.

How Nuclear Radiation Works

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Nuclear radiation can be extremely beneficial or extremely harmful -- it all depends on how it's used. Learn what nuclear radiation is all about.

How does nuclear waste disposal work?

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Nuclear waste epitomizes the double-edged sword of modern technology. It's a toxic and radioactive byproduct of nuclear medicine, nuclear weapons manufacturing and nuclear power plants.

How the Nuclear Arms Race Works

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The nuclear arms race was a frantic era in which several nations tested nuclear technology and stockpiled warheads. Read about the nuclear arms race.

Could we really blow up an incoming asteroid with a nuclear bomb?

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Surely nuclear weapons, which can obliterate entire cities, contain enough destructive power to blow a giant space rock to bits, right? What does NASA make of the whole explosive business?

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