this post was submitted on 16 Feb 2025
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Climate - truthful information about climate, related activism and politics.

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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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Carbon capture more costly than switching to renewables, researchers find (techxplore.com)
submitted 1 week ago by [email protected] to c/[email protected]
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[โ€“] [email protected] 3 points 1 week ago (1 children)

Thing is, the time for net-zero has passed, did you hear that whooshing sound?

To pull back from the brink, what is needed is net-negative, which ain't happening without capture (alongside massive reduction in emissions), economics be damned, it's an existential threat, it's about survival. Could be as simple as massive reforestation, could be fusion generators pulling CO2 out of the air, will probably be many different things, but learning what works, as soon as possible, is imperative.

[โ€“] [email protected] 5 points 1 week ago

We're nowhere near net zero, though. We do need to get there first. Since carbon capture removes far less carbon per money spent on it than replacing fossil fuel power plants with clean options does, carbon capture doesn't really make sense right now

The varieities that might work out are the ones that give some other benefit for now. Afforestation can help prevent desertification, for example