alt Hacker NewsYou can actually capture CO2 from sea water thereby reducing ocean acidification and improving its capability to continue as our planets biggest CO2 sink.
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sfn42 • today at 2:52 PM
Well here's the thing - there's quite a lot of water out there too.
How long and how many terawatts of power do you think it'll take to suck a significant fraction of the earth's seawater through a capture facility?
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there's also lots of water to wash then.
The problem is the same, the relative concentration of oxygen in air is less than 0.05% (~450pars per million). In water much less.