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This is Scientific American 60-Second Earth. I'm David Biello. Your minute begins now.

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The military, space and aviation experts at Lockheed Martin want you to know that they're closing in on fusion.

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The firm's secretive Skunk Works has announced that its compact fusion reactor is a mere 10 years away and would investors please send money.

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The device would work¡ if it works¡ by fusing atoms of hydrogen together.

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This fusion produces a larger atom helium plus copious energy.

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As a bonus, fusion does not produce radioactive waste, unlike its poor cousin fission that's in use in nuclear reactors around the world today.

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The key to Lockheed's device, they say, is superconductors.

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They'll create magnetic fields strong enough to contain the superhot plasma created by fusion.

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When the atoms of heavy hydrogen fuse in that plasma, neutrons are released that then hit the reactor wall, heating it.

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That heat then boils water to make steam to spin a turbine.

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Or so the theory goes.

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Unfortunately, neutrons have a nasty habit of making materials brittle, among other challenges faced by Lockheed and everyone else chasing fusion.

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Of course, the world already enjoys the benefits of one fusion reactor,

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which sits at a comfortable remove and can be easily harnessed with a working technology called photovoltaics.

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It's called the Sun.

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Your minute is up, for Scientific American 60-Second Earth. I'm David Biello.

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