this post was submitted on 20 Dec 2024
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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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How a Burgeoning Industry in Kazakhstan Is Trying to Kickstart ‘Climate-Smart Beef’ | The country is working to scale up livestock industry without adding to global emissions. Experts are skeptical (insideclimatenews.org)
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[–] usernamesAreTricky@lemmy.ml 8 points 1 day ago* (last edited 1 day ago) (1 children)

"climate-smart beef" is pure greenwashing

Many argue that this overlooks the large variation in the footprints of foods across the world. Using global averages might give us a misleading picture for some parts of the world or some producers. If I source my beef or lamb from low-impact producers, could they have a lower footprint than plant-based alternatives? The evidence suggests, no: plant-based foods emit fewer greenhouse gases than meat and dairy, regardless of how they are produced.

https://ourworldindata.org/less-meat-or-sustainable-meat

Livestock farmers often claim that their grazing systems “mimic nature”. If so, the mimicry is a crude caricature. A review of evidence from over 100 studies found that when livestock are removed from the land, the abundance and diversity of almost all groups of wild animals increases

https://www.theguardian.com/environment/2022/aug/16/most-damaging-farm-products-organic-pasture-fed-beef-lamb

There’s not been a single study to say that we can have carbon-neutral beef

[...]

We also have to ask how much of the sequestered carbon in these systems is actually due to the cattle. What would happen to the land if it were simply left fallow?

The answer is, depending on the land, and on the kind of grazing, it might sequester even more carbon

https://www.washingtonpost.com/food/2022/10/03/beef-soil-carbon-sequestration/

[–] commie@lemmy.dbzer0.com 1 points 18 hours ago* (last edited 18 hours ago)

https://ourworldindata.org/less-meat-or-sustainable-meat

this write up relies heavily on poore nemecek 2018. I'm dubious any conclusions can be drawn from it.