this post was submitted on 22 Aug 2024
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Climate - truthful information about climate, related activism and politics.

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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:

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Here's how much cropland could be freed up if Americans ate half as much meat (grist.org)
submitted 2 months ago by [email protected] to c/[email protected]
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[โ€“] [email protected] 6 points 2 months ago* (last edited 2 months ago) (1 children)

We can likely get even more by shifting from gas cars to EVs; notice how much corn is converted into motor fuel:

[โ€“] [email protected] 1 points 2 months ago

Transition to irrigated only production combined with moving to EV and we'd need 75% less land for corn. While still eating the same amount of meat.

Banning open range and converting to annual crop rotational grazing would decrease land usage for grazing by 70-80%.

Moving all vegetable production to protected culture would decrease land area needed by 50% or more.

Around 70-80% of environments we destroy for farming/ranching is completely unnecessary. We have the technology and ability to grow what we need an less than 25% of the land area we currently dedicate for agriculture.