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  • Mars once was wet and fertile. It's now bone dry. Something bad happened on Mars. I want to know what happened on Mars so that we may prevent it from happening here on Earth.

    Neil deGrasse Tyson
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    Interview with Don Cohen, appel.nasa.gov. June 1, 2008.
    Neil deGrasse Tyson Quotes

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Mars once was wet and fertile. It's now bone dry. Something bad happened on Mars. I want to know what happened on Mars so that we may prevent it from happening here on Earth. - Neil deGrasse Tyson
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