We want to use air because of the cheap, gravitational pressure vessel we have o... | Hacker News

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		DaniFong on Nov 5, 2012 \| parent \| context \| favorite \| on: Peter Thiel, Bill Gates, Khosla fund LightSail Ene... We want to use air because of the cheap, gravitational pressure vessel we have on this planet. :-)

rdl on Nov 5, 2012 [–]

Get rid of all the plants, wait a few (hundred? thousand?) years.

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