this post was submitted on 23 Mar 2025
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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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A Mysterious Startup Is Developing a New Form of Solar Geoengineering | Stardust, an Israeli–US startup, intends to patent its unique aerosol technology for temporarily cooling the planet. (www.wired.com)
submitted 1 week ago by silence7@slrpnk.net to c/climate@slrpnk.net
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[–] houseofleft@slrpnk.net 6 points 1 week ago* (last edited 1 week ago) (2 children)

There's a great chapter on geo-engineering in Naomi Klein's This Changes Everything.

Main take aways are that it's extremely dangerous and in a best case scenario likely to render parts of the global south unhabitable.

I think the most significant question, it's a quote from a scientist in that chapter, is "Can the same human beings who accidentally engineered the climate crisis, be trusted to engineer a new, safer climate?". You can draw your own conclusions, but mine is definitely a big no.

Extra point, my own opinion, is that acting like warming is the only thing causing issues for us in climate change is very short sighted. The ocean, our world's most important ecosystem, is being massively impacted by acidification, if that doesn't stop, we'll face big issues, regardless of temperature increase. Plankton creates more than half the worlds oxygen, so, I don't really know what we're gonna do without that.

[–] Nyssa@slrpnk.net 5 points 1 week ago

I think ocean iron fertilization has some promise to it, and it has the benefit of being able to be experimented with at a small scale and subsequently scaled up responsibly to measure effects. Aerosols are kind of a one and done solution, and if for any reason its suspended, their is a boomerang effect that drives warming even higher

[–] ManualOverride@slrpnk.net 2 points 1 week ago* (last edited 1 week ago)

I don't get all these "geo-engineering" magic bullets. Capitalists are taking carbon out of the ground and putting it into the air and oceans. The carbon in the air leads to warming, and the carbon in the ocean leads to acidification. Both of these things are disastrous. We need to stop the capitalists. Leave the carbon in the ground, where it belongs. Simple as