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Source: www.gadgethalloffame.com via gadgethof on Gentlemint
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Bah. Been done.
Bah. Doon e'en arlier.
That thing would need to filter all of the oxygen out of 25 gallons of water per minute to provide the average person with enough oxygen. And that's assuming that they're not breathing hard.
I'm calling shenanigans.
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