this post was submitted on 13 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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The climate impact of feeding ourselves is getting worse and worse: If we want to reduce the greenhouse gas emissions from food production, we have to make it more efficient as global population grows (www.newscientist.com)
submitted 3 months ago by [email protected] to c/[email protected]
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[โ€“] [email protected] 17 points 3 months ago (1 children)

What efficient means: switching from ecologically expensive foods like beef to lower impact vegetarian diets.

What efficient does not mean: using vast quantities of fertilizers, herbicides and pesticides.

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

Wait, you're telling me the galaxy brains over at big-ag, who say that factory farms are actually good for the world, because caging up animals lowers land requirements... they lied to me?