... that a century from now, the planet Pluto will seem closer to our grandchildren than the Earth's poles did to our grandparents. There is no doubt that the powers that are now coming into our hands will be enough to reshape this solar system like we have already reshaped the Earth (Man and Space 153). In order to avoid extinction of the human race from cosmic catastrophes ... to collide with Earth in the next 100 thousand years (The Threat 1-4). The immediate effects of a major impact, including firestorms, acid rain, and the destruction of ozone layer, coupled with the possible triggering...

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