into the sky. Pieces of the earth and the dust in the atmosphere would block the Sun and plant life would die. Any humans who survived would have no food and be facing a climate much more severe than a nuclear winter.
The atmosphere would clear after a few months or years, but the Earth, now devoid of vegetation, may reflect too much of the Sun's radiation to be habitable (The Threat, 2006). The atmosphere would contain a huge excess of carbon dioxide, causing global fires and the release
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