this post was submitted on 12 May 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.

Recommended actions to cut greenhouse gas emissions in the near future:

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Scientists issue dire warning after sudden shift on remote island raises alarm: 'Most years it doesn't come at all' (www.thecooldown.com)
submitted 1 week ago by floofloof@lemmy.ca to c/climate@slrpnk.net
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[–] WHARRGARBL@lemmy.world 15 points 1 week ago* (last edited 1 week ago)

In 2015 a biologist from Alaska told me about the ~40,000 seabirds that had all starved to death, at ground zero on his bay, in a matter of weeks. He had been studying these murres for years, and he cried as he described the horror of it all. It was the start of the 4,000,000 bird die-off, which was apparently not newsworthy.

I don’t remember many conversations in my life, but this silenced alarm hit hard, because I saw that our mass extinction had arrived.

https://www.audubon.org/magazine/single-heatwave-killed-half-alaskas-common-murres-shocking-new-study-reveals