this post was submitted on 04 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:

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Giant trees have no trouble pumping water to top branches (news.exeter.ac.uk)
submitted 5 days ago by SqueakySpider@lemmy.dbzer0.com to c/climate@slrpnk.net
6 comments fedilink hide all child comments
 

cross-posted from: https://lemmy.bestiver.se/post/1206256

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[–] SirSamuel@lemmy.world 8 points 5 days ago (1 children)

Headline: "…pumping water…"

Right in the goddamned article

“Trees contain lots of thin, hollow vessels and they suck water upwards by creating low pressure at the top,” said Professor Lucy Rowland, from the University of Exeter. (emphasis mine)

Come on, article writers, be kinder to the pedants!

[–] m0darn@lemmy.ca 5 points 4 days ago* (last edited 4 days ago) (1 children)

I still don't really understand how trees could possibly suck something up higher than air pressure can push it. Are they like using surface tension or something?

[–] Slatlun@lemmy.ml 9 points 4 days ago (1 children)

Yes, surface tension causing capillary action with negative pressure at the top caused by evapotranspiration.

[–] SirSamuel@lemmy.world 4 points 4 days ago

☝️ this one trees