The meteorites of 1908 and 1947 had struck uninhabited wilderness; but by the end of the twenty-first century there was no region left on Earth that could be safely used for celestial target practice.

Arthur C. Clarke

Tag: space cosmos meteors population-density

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The first problem of living is to minimize friction with the crowds that surround you on all sides.

Isaac Asimov

Tag: crowds urban-life population-density

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