this post was submitted on 21 Jun 2026
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Build one of these in a year, or plant 10 thousand trees and wait decades for them to grow...
Making a cubic metre of concrete creates almost half a ton of Co2, so it will take years if not decades for the plant to even make up being built. A tree starts capturing immediately and keeps doing so for decades all by itself.
Carbon neutral concrete exists.
In theory. Nobody actually manufactures it yet in any quantity, and it will take a long time to be able to replace even a measurable fraction of the 30 billion tons the world uses annually.
So let's just give up because it's a tough engineering problem, right?
People need to stop letting perfect be the enemy of good.
An alternative way to look at it is that we should focus on the solutions that actually make sense. Carbon capture is like plastic recycling, the solution to it isn't to try to recycle harder, it's to reduce the use of plastics so we don't have anything to recycle.
Also, do you know what the majority of the captured Co2 is currently used? To extract oil.