this post was submitted on 08 Oct 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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Nestle Bows Out of Initiative to Reduce Dairy’s Climate Impact (www.bloomberg.com)
submitted 1 week ago by silence7@slrpnk.net to c/climate@slrpnk.net
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The food giant has left the Dairy Methane Action Alliance, an effort to reduce greenhouse gas emissions from herds of cattle.

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[–] veganpizza69@lemmy.vg 11 points 1 week ago (1 children)

They can't reduce "Dairy's Climate Impact". The greenwashing is over, that was meant to delay changes by "moderate" regimes. With conservatives in power, the greenwashing is no longer necessary. The only significant reduction is achieved by reducing the industry, the more shrinkage, the better.

[–] silence7@slrpnk.net 3 points 1 week ago (1 children)

You could in theory by doing things like producing milk through precision fermentation or by altering the gut microbiome of cattle. The latter being somewhat possible through dietary changes, but not financially supported in any meaningful way.

In any case, they're not even pretending to try anymore

[–] veganpizza69@lemmy.vg 1 points 1 week ago

You can't change the cows or the microbiome in any meaningful way, the methanogens are part of the digestive and nutrient extraction process. They can play with the food and sprinkle in selective antibiotics, but that usually leads the cows suffering or just not being "productive" enough. Now if you want to give some special feed to deer to make them produce less GHGs, that would be something interesting.