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Modern Marvels S10 Ep56: Doomsday Tech 1Doomsday threats range from very real, nuclear arsenals, to controversial, global warming, to futuristic - nanotechnology, cyborgs, and robots.![Modern Marvels by History]()
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Now PlayingModern Marvels S10 Ep56: Doomsday Tech 1Doomsday threats range from very real, nuclear arsenals, to controversial, global warming, to futuristic - nanotechnology, cyborgs, and robots.0
Modern Marvels S10 Ep57: More Doomsday TechWe examine more threats--both natural and manmade--that may endanger civilization; from the far reaches of space to tiny viruses, doomsday sources are many.