this post was submitted on 22 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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Best and Worst U.S. States for Air Quality (2025) (slrpnk.net)
submitted 1 day ago by Innerworld@lemmy.world to c/climate@slrpnk.net
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[–] AngryMob@lemmy.one 1 points 4 hours ago

This could use more granularity

[–] Sagan_Wept@sh.itjust.works 2 points 8 hours ago

Out cant tell me Oregon is worse than New York

[–] Stamau123@lemmy.world 1 points 10 hours ago

Because of the depression Denver sits in, and the mountains and valleys that surround it, for a brief time a few years ago during wildfires Denver had the worst air quality on the planet

[–] Sarcasmo@piefed.social 10 points 1 day ago

I thought it was California in danger but it looks like we've lost Florida.

[–] lauha@lemmy.world 5 points 21 hours ago

Looks like Wyoming and New Hampshire are the only non-polluted ones and NH barely at that.

[–] tdawg@lemmy.world 4 points 22 hours ago (1 children)

Casually leaving out how California is famous for being painfully car dependent

[–] FerretyFever0@fedia.io 6 points 22 hours ago

The whole country is car dependent lol

[–] ryannathans@aussie.zone 4 points 1 day ago

Mmm best part is most of the pm2.5 in the air is literally plastics (e.g. from tyres)

[–] RebekahWSD@lemmy.world 2 points 22 hours ago

I knew PA was actually the stinky one and not NJ!! Lmao

[–] Gork@sopuli.xyz 1 points 20 hours ago (1 children)

California has stricter environmental requirements for their gasoline grades, so shouldn't it make the air quality better? Or does the sheer number of drivers just offset it?

[–] ProdigalFrog@slrpnk.net 3 points 11 hours ago

It has a little red infographic next to CA explaining that the high port activity, sheer number of drivers, and high temps are contribute to it being worse.