this post was submitted on 16 Jul 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:

Anti-science, inactivism, and unsupported conspiracy theories are not ok here.

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Air quality across the Eastern US & Canada right now (slrpnk.net)
submitted 1 week ago by fireweed@lemmy.world to c/climate@slrpnk.net
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Screenshot taken from PurpleAir. 150 and above is considered unhealthy, 300 and above is considered hazardous.

https://map.purpleair.com/air-quality-standards-us-epa-aqi

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[–] deacon@lemmy.world 16 points 1 week ago (1 children)

500 where I am right now. I didn’t even have a sense of the AQI scale until today, and now it’s quite skewed.

[–] deacon@lemmy.world 13 points 1 week ago (1 children)

It’s like learning what airplanes are on 9/11

[–] deacon@lemmy.world 9 points 1 week ago

I don’t know why I’m replying to myself instead of editing my first comment but, well I don’t think comments cost money, and they seemed like iterative thoughts to me. So don’t worry about it.