this post was submitted on 06 Mar 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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40% of global ship traffic is simply moving fossil fuels around! Renewables make much of this traffic obsolete (slrpnk.net)
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[–] wewbull@feddit.uk 7 points 1 day ago (3 children)

Overheard of these things called "sails". Maybe they could look into those.

[–] HeyThisIsntTheYMCA@lemmy.world 1 points 1 day ago

those are sails, they're just weird

[–] SaveTheTuaHawk@lemmy.ca 2 points 1 day ago

Old sail ships could get stuck for days without wind.

[–] bluGill@fedia.io 4 points 1 day ago (1 children)

They work. However they are a lot slower - by enough that no shipping company can compete using them. I'm not clear on if they scale to the size of modern ships either.

[–] wewbull@feddit.uk 2 points 1 day ago

Pretty sure they don't, at least not as a total replacement. Reducing fuel usage is still a possibility maybe.