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Superman is Smiling

Oh no! There’s only 4,200 cubic kilometers of Krypton left in the entirety of Earth’s atmosphere. If humans keep using Krypton at current rates … oops … scratch that.

2 Responses to “Superman is Smiling”

  1. Harry says:

    I went to your link and found that CO2 is .039 percent of the atmosphere, not the .036 percent I had thought. The answer did not specify whether it was the “effective” atmosphere, or total atmosphere.

  2. Rod says:

    Pondering Krypton and its use in fluorescent signs makes me thirsty for a Rolling Rock.

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