this post was submitted on 29 Jul 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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The US is sitting out the most consequential climate summit in a decade. It may offer a victory to China (www.cnn.com)
submitted 1 day ago by silence7@slrpnk.net to c/climate@slrpnk.net
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[–] limer@lemmy.ml 5 points 1 day ago

It could have been worse. Could a Trump delegation actually be productive and not sabotage the summit?

The USA was not going to help after the orange menace gained power. It could have been worse other than non participation.

I’m grateful he did not send a delegation headed by the someone who doubts carbon dioxide exits. Or one who thinks climate change helps bring the second coming of Christ.