this post was submitted on 12 Jun 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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I'll note that California was trying phase down new gas cars over a period of years, and still allowed 20% plug-in hybrids at the end of the phase-down.

Edit: Gov Newsom immediately announced a lawsuit over this

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[–] Codilingus@sh.itjust.works 2 points 3 weeks ago (2 children)

Was/is this going to be a ban on only new gas powered car sales? Or all cars, including ones people already own? What about used car sales?

[–] silence7@slrpnk.net 5 points 3 weeks ago* (last edited 3 weeks ago) (1 children)

It was a partial phase-out of sale of new gas powered cars, taking effect in steps over a decade. 20% of new cars could still be plug-in hybrids, which burn gasoline when the battery runs out. No ban on cars people already own or restriction on used cars.

[–] Codilingus@sh.itjust.works 2 points 3 weeks ago

Thank you for the info!