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What is the blackest substance on earth, and the whitest?

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What is the blackest substance on earth, and the whitest?

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  1. coal and snow?


  2. Titanium dioxide is the whitest.

    The blackest substance is man-made and hasn't been named yet.  It is three times darker than the nickel-phosphorous alloy that now holds the record as the world's darkest material  

    Read about it at:

    http://www.reuters.com/article/scienceNe...

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