Science Memes

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Entropy? Never heard of it. (lemmy.dbzer0.com)

submitted 4 days ago* (last edited 4 days ago) by [email protected] to c/[email protected]

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[–] [email protected] 37 points 4 days ago (9 children)

Even if we went to zero emissions soon, we'd still want to decrease CO2 over time to reverse the effects of climate change. Capturing co2 is always going to be much more energy intensive than not emitting it in the first place, but sometimes you don't have another choice.

[–] [email protected] 3 points 4 days ago (8 children)

Or you know, we could plant trees…the original carbon capture device.

[–] [email protected] 6 points 4 days ago* (last edited 4 days ago) (3 children)

Yeah, but then you need to cut them down and burry them so that decomposition doesn't release the co2 again. And it takes a lot of land, which can be prohibitive on the scale we'll need.

Another interesting option is fertilizing parts of the ocean for algie to grow. Cody'sLab has an interesting video on a possible way to do that with intentionally crashing astroids into the ocean. https://youtu.be/z7u_IqzkJzE https://youtu.be/2zQb_OitsaY/?t=13m40s

All of these, plus mechanical direct air carbon capture are methods of carbon capture. The right answer will likely be some mix of all of them.

[–] [email protected] 2 points 3 days ago* (last edited 3 days ago)

You may be able to get away with stacking the cut trees in deserts, where the dryness may prevent bacterial action

Edit: I watched the Cody's lab video. I'm now on team asteroid 2024 yr4. If it isn't going to hit we ought to try to get it to hit the Southern Ocean, and if it will hit we should aim it

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