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A comment on Mineral hints at bright blue rocks deep in the Earth. Parent comment

Re:Mineral hints at bright blue rocks deep in the Earth by sa1 on Thursday March 13, 2014 @01:54AM (#7390236)
It won't ever be economical to extract water from 600km below the surface. Also, oil won't last forever.
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Re:Mineral hints at bright blue rocks deep in the Earth by thaumasiotes on Thursday March 13, 2014 @06:32AM (#7390969)
It's economical to desalinize seawater (once memorably [to me] described as "the most worthless substance in the world") now. We don't do it because using already-fresh water is even cheaper, but desalinization isn't exactly expensive.
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Re:Mineral hints at bright blue rocks deep in the Earth by joshdance on Friday March 14, 2014 @10:35AM (#7398959)
Source on the economics of desalinization? Everything I have ever seen have put it at pretty expensive. Would love to see a per gallon or liter price.
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Re:Mineral hints at bright blue rocks deep in the Earth by dsaravel on Thursday March 13, 2014 @04:06AM (#7390566)
Well, the stone age didn't end for lack of stones.
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Re:Mineral hints at bright blue rocks deep in the Earth by TeMPOraL on Thursday March 13, 2014 @07:52AM (#7391193)
Stone is a construction material, not a power source.
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