this post was submitted on 23 Feb 2026
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Climate

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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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High power bills impeding heat pumps, California’s electrification goals (calmatters.org)
submitted 1 day ago by silence7@slrpnk.net to c/climate@slrpnk.net
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[–] GreenCrunch@piefed.blahaj.zone 4 points 1 day ago

Here in the US heat pumps are unreasonably expensive too... We already have AC, it's the same damn thing but backwards! There was a government credit to lower the cost, but I'm guessing that mostly affected the sticker price (since it was X% of the cost up to some maximum I think) so the heat pump company can make more. Adoption is more challenging if a building has older central AC as well, since we use different refrigerants now (much better for environment), but they run at a different pressure, so you need to replace the coils and all refrigerant lines, which is expensive.