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'A major meteor impact occurs on the north polar ice cap. The resulting tsunamis cause considerable damage along the coasts of Greeland and Canada. The long-discussed “Project Spaceguard,” to identify and deflect potentially dangerous comets or asteroids,

Created by gwern on 2010-10-26; known on 2020-01-01; judged wrong by JoshuaZ on 2020-01-01.