How Much Energy Would It Take to Pull Carbon Dioxide out of the Air?

jeffw@lemmy.world to Technology@lemmy.world – 151 points –
How Much Energy Would It Take to Pull Carbon Dioxide out of the Air?
wired.com
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I know something better and it's solar powered: Trees!

Trees are great for other reasons, but they grow far too slow to capture significant carbon. The fastest natural carbon sinks are algae.

I say, we damn up all of the arctic circle, propagate Azolla there, kill it off and sink it every season. Nature did it once! We can do it again!

But think of all the space that would take! If you replant forests where are we going to put our superhighways and parking lots?