this post was submitted on 11 Apr 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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[–] commie@lemmy.dbzer0.com 3 points 1 day ago

this study relies on this database

https://doc.agribalyse.fr/documentation-en

which compiles multiple lca studies. this is explicitly against the guidance for lca studies, because lca studies are all disparately methodized.

I'm afraid this is probably bad science

[–] phutatorius@lemmy.zip 8 points 2 days ago* (last edited 2 days ago)

From the intro to the study: "In the OMNIVEG study, 14 healthy, physically active men followed a traditional MedDiet for 3 weeks and a vegan MedDiet for 4 weeks, with a 1-week washout."

Small sample size. Highly selective criteria for choosing the subjects. Very short test duration. The impact assessments are opaque, arbitrary and massively over-extrapolated. None measure actual impacts, only projected impacts. This study is a methodological mess: all noise and no signal.

Do it again in a long-term longitudinal study with a large, diverse sample population, and measure real impacts, not proxies, then we'll actually know something.

[–] KoboldCoterie@pawb.social 13 points 3 days ago

Worth noting that it was also 16% cheaper, as well.

[–] SaharaMaleikuhm@feddit.org 3 points 2 days ago
[–] betanumerus@lemmy.ca 0 points 2 days ago* (last edited 2 days ago) (1 children)

Eat local though. Importing olive oil from the Med means you're burning diesel.

[–] hsr@lemmy.dbzer0.com 3 points 2 days ago (1 children)

Given that choice you should buy local, but most of the difference in emissions depends on the type of food, not transport.

https://ourworldindata.org/food-choice-vs-eating-local

[–] commie@lemmy.dbzer0.com 2 points 1 day ago

this is based on poore-nemecek, which suffers from bad methodology.

[–] zwerg@feddit.org 1 points 3 days ago (2 children)

Why mention Mediterranean? Does a vegetarian Hindu diet not have the same affect?

[–] inari@piefed.zip 9 points 3 days ago (2 children)

Because it's not what they tested in the study. If the Hindu vegetarian diet includes dairy, I doubt it'd be as efficient as a vegan diet

[–] Gsus4@mander.xyz 4 points 2 days ago* (last edited 2 days ago) (2 children)

Ok, it never occurred to me that even if you actively worship your source of dairy...still not vegan...

[–] kerrigan778@lemmy.blahaj.zone 1 points 2 days ago (2 children)

You... You know other animals produce milk right?

[–] Gsus4@mander.xyz 1 points 2 days ago* (last edited 2 days ago)

I know Hindus drink plenty of cow milk and in part worship cows for that life giving, that is what I'm talking about.

[–] inari@piefed.zip 2 points 2 days ago

Turns out religious people love loopholes

[–] kerrigan778@lemmy.blahaj.zone -2 points 2 days ago

You... You know other animals produce milk right?

[–] x00z@lemmy.world 2 points 2 days ago

Diets differ a lot and Hindu is far more vegetarian than Mediterranean.