this post was submitted on 14 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.

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The ‘world’s largest’ vacuum to suck climate pollution out of the air just opened. Here’s how it works (edition.cnn.com)
submitted 1 month ago by GreeNRG to c/climate
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[–] angeredkitten 62 points 1 month ago (3 children)

Occidental says the captured carbon will be stored in rock deep underground, but its website also refers to the company’s use of captured carbon in a process called “enhanced oil recovery.”

Oh yes, let's just hedge our bets and use projects with the guise of being a climate solution to actually help oil companies scrape the bottom of the barrel. What the hell.

[–] Rhaedas@fedia.io 31 points 1 month ago

"Greenwashing". Always look at the full process and the total energy cost. Marketing can sell anything, including saving the planet.

[–] Delta_V@lemmy.world 22 points 1 month ago (1 children)

CNN is notorious for stretching the truth in pursuit of the class interest of their owners.

AFAIK, the oil companies need a large volume of gas that's free from oxygen. I wonder how energy intensive this "carbon capture" tech is compared to capturing the 78% nitrogen that makes up our atmosphere? This implementation of the technology might be worse for the environment than doing nothing.

[–] Rhaedas@fedia.io 8 points 1 month ago

That's a good point. Could it be cheaper for the company even if it takes more energy because "green" solutions get subsidies?

[–] Diplomjodler3@lemmy.world 0 points 1 month ago

This particular project doesn't do that. And it's all very much in the proof of concept stage. There may still come a time when this sort of technology is our last resort. In the meantime it won't hurt to keep developing it.