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marcosdumay
on Aug 17, 2017
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Living on Mars: The Stuff You Never Thought About
For most metals, some platinum (much, much less than coal) and electricity (much, much more than when using coal) are enough. It is steel that is the problem, but you can also make it (way more expensively) using atmospheric CO2.
Consider applying for YC's first-ever Fall batch! Applications are open till Aug 27.
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