this post was submitted on 25 Nov 2025
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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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‘Fossil fuel giants finally in the crosshairs’: Cop30 avoids total failure with last-ditch deal (www.theguardian.com)
submitted 4 months ago by silence7@slrpnk.net to c/climate@slrpnk.net
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It took some oblique wording, but Saudi Arabia made a last-minute decision to sign deal that marks departure for Cop

In particular:

The breakthrough, when it came, was with Saudi Arabia. Soon after 6am, Miliband and the EU climate commissioner, Wopke Hoekstra, split from the main group to hold a private conversation with the chief Saudi negotiator, Khalid Abuleif. They pressed on him wording that would obliquely recognise the global commitment to “transition away from fossil fuels” made two years ago in Dubai. Rather than explicitly namecheck fossil fuels, it would refer to “the UAE consensus”, the name given to the Cop28 deal.

This is oblique enough that I think most people paying only modest levels of attention didn't think anything meaningful was agreed to, and without that, I don't think its going to have much impact

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