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5 Unsolved Shipwreck Mysteries
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It's Happening - China Launches World's First Thorium Nuclear Reactor
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Four Incredible Machines That Are No Longer With Us
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These are the Places on Earth You Can't Visit
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China is Building an Insane Artificial River
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Nuclear waste is reusable. Why aren’t we doing it?
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Desertec: The Amazing Plan to Cover Africa in Solar Panels
25:53