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I calculated it a while back and we would need to cover entire the landmass of earth with old growth forrest every 20 years to offset ongoing emissions.

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drath@lemmy.world ⁨5⁩ ⁨hours⁩ ago
How much more would we need to emit to capture all that, freeze it into a giant cube and fucking YEET that into space? No carbon - no problem.

Not a serious proposal, just curious

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birdwing@lemmy.blahaj.zone ⁨1⁩ ⁨day⁩ ago
I’m interested in your calculations, where…?

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- anton@lemmy.blahaj.zone ⁨1⁩ ⁨day⁩ ago
  In some youtube comment somewhere. It’s just three numbers, the carbon storage of a hectare mature forrest times the land surface area divided by yearly emissions.
  
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CompactFlax@discuss.tchncs.de ⁨1⁩ ⁨day⁩ ago
Meanwhile we are cutting the last of old growth.

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shalafi@lemmy.world ⁨1⁩ ⁨day⁩ ago
Scientists figured we’d have to cover all of North America, tundra, desert, ALL of it, to offset 10-years of CO2 output. And then we’d have to do it again in every 10-years.

Why does it have to be old growth though? New growth is faster growing species and has more plants at the ground level. I would think a hectare of growing pine would capture more CO2 than a relatively static oak forest. ?

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