this post was submitted on 25 Aug 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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Why scientists are trying to reengineer the cow's stomach | Scientists in California are working to genetically engineer the cow microbiome -- and in the process, eliminate methane emissions. (wapo.st)
submitted 3 months ago* (last edited 3 months ago) by [email protected] to c/[email protected]
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I'll note that if this works, it solves the methane problem, but not the land use problem associated with cattle.

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[โ€“] [email protected] 7 points 3 months ago (1 children)

Going vegan could save as much as 50% of diet-based greenhouse gas emissions, which in total is around 20% of all ghg emissions.

Or, y'know, we could overengineer a solution without knowing what the unintended consequences are and end up shifting from one global crisis to another, but at least our tastebuds wouldn't have to miss out on our precious rotting corpse flavor.

[โ€“] [email protected] 4 points 3 months ago

all of agriculture is only about 20% of our GHG emissions. at least according to owid. do you have another source?