this post was submitted on 06 Oct 2024
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Discussion of climate, how it is changing, activism around that, the politics, and the energy systems change we need in order to stabilize things.

As a starting point, the burning of fossil fuels, and to a lesser extent deforestation and release of methane are responsible for the warming in recent decades: Graph of temperature as observed with significant warming, and simulated without added greenhouse gases and other anthropogentic changes, which shows no significant warming

How much each change to the atmosphere has warmed the world: IPCC AR6 Figure 2 - Thee bar charts: first chart: how much each gas has warmed the world. About 1C of total warming. Second chart: about 1.5C of total warming from well-mixed greenhouse gases, offset by 0.4C of cooling from aerosols and negligible influence from changes to solar output, volcanoes, and internal variability. Third chart: about 1.25C of warming from CO2, 0.5C from methane, and a bunch more in small quantities from other gases. About 0.5C of cooling with large error bars from SO2.

Recommended actions to cut greenhouse gas emissions in the near future:

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Cement Is a Big Polluter. A Plant in Norway Hopes to Clean It Up. | Heidelberg Materials is betting it can profit from an expensive process that will reduce the carbon dioxide emitted (www.nytimes.com)
submitted 1 month ago by silence7 to c/climate
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[–] I_am_10_squirrels@beehaw.org 5 points 1 month ago (4 children)

tl;dr - it's sequestration, not reduction. Liquify it and pump it underground.

[–] silence7 3 points 1 month ago (3 children)

They don't capture all the emitted CO2, so it's a reduction.

[–] I_am_10_squirrels@beehaw.org 1 points 1 month ago (2 children)

It's not reducing the amount of co2 generated from making the cement. It still generates the same amount, they just take some of it and pump it into the ground.

[–] silence7 1 points 1 month ago (1 children)

I think we're in agreement, just using terms in slightly different ways.

[–] I_am_10_squirrels@beehaw.org 1 points 1 month ago

To me, carbon reduction means you have modified the process in some way that it generates less carbon while producing the same (or functionally identical) product. That is how we fight climate change.

Generating the same amount of carbon but just putting it somewhere else is putting a bandage on gangrene. It makes it look better, but the infection is still festering underneath. In this case, making it a problem for future generations so the current generation doesn't have to sacrifice anything.