Collapse

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This is the place for discussing the potential collapse of modern civilization and the environment.

Collapse, in this context, refers to the significant loss of an established level or complexity towards a much simpler state. It can occur differently within many areas, orderly or chaotically, and be willing or unwilling. It does not necessarily imply human extinction or a singular, global event. Although, the longer the duration, the more it resembles a ‘decline’ instead of collapse.

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Getting real about capturing carbon from the air (www.cell.com)

submitted 4 months ago* (last edited 4 months ago) by eleitl@lemm.ee to c/collapse@lemm.ee

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Abstract

Many modeling studies depend on direct air capture (DAC) in their 1.5°C stabilization scenarios. These studies rely on assumptions that are overly optimistic regarding the cost and scaling-up of DAC systems. This can lead to highly misleading results that can ultimately impact the ability to reach climate stabilization goals.

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[–] Rhaedas@fedia.io 2 points 4 months ago

Plant trees to recover diversity. It's not a solution for carbon capture. Not that it won't capture a lot of carbon, it will...but what's now in the air is the product of millions of years of plant capture all released in a century. A completely forested Earth is only a percentage of that, and we can't and won't cover that much area anyway. So planting trees is always a great idea, just not to fix this particular problem.

Neither is DAC, but for different reasons. Mainly power use and entropy.