Asteroid : doomsday or payday?
From the width of a football field to the size of a small city, the space rocks called asteroids have the potential to be killers. But some asteroids may be loaded with billions of dollars' worth of iron, nickel and even platinum. Will asteroids turn out to be our economic salvation-or instrume...
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| Format: | DVD |
| Language: | ENGLISH |
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PBS
2014
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