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If There Is Water on Mars, Who Gets to ­se It?

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Mars water

In this handout provided by NASAs Mars Reconnaissance Orbiter, dark, narrow streaks on the slopes of Garni Crater are inferred to be formed by seasonal flow of water on surface of present-day Mars.

Credit: NASA/JPL-Caltech/University of Arizona via Getty

Humans settle around water, especially in the desert.

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