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| Super Volcano: The Ticking Time Bomb Ben |
| Despite growing evidence of geothermic activity under Americas first and foremost national park, it took geologists a long time to realize that there was actually a volcano beneath Yellowstone. And t... |
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| Price $24.95 |
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| Volcanoes |
| Volcanoes provide us with some of the earth’s most spectacular events, and some of its most catastrophic disasters. Their tremendous power has been an elemental force on the planet ever since its bir... |
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| Price $17.95 |
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