this post was submitted on 25 Jan 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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What are the odds that extreme weather will lead to a global food shock? The insurance giant Lloyd’s evaluated the risks in a recent study. (yaleclimateconnections.org)
submitted 9 months ago by [email protected] to c/[email protected]
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The report looked at “major,” “severe,” and “extreme” scenarios. The authors found that the “major” case would cost the world $3 trillion over a five-year period, which they estimated has a 2.3% chance of happening per year. Over a 30-year period, those odds equate to about a 50% probability of occurrence — assuming the risks are not increasing each year, which they are.

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[–] [email protected] 9 points 9 months ago (1 children)

Lack of food and water will lead to war, and the war machine will pump even more carbon into our atmosphere, leading to more drought and less food and water. It's a self-sustaining cycle and I've no idea how we avoid it at this point.

[–] [email protected] 1 points 9 months ago

Good water recycling systems (and desalination systems for those on the coast) combined with low cost and distributed synth bio based food production (i.e. precision fermentation, or biomass fermentation) could help relieve some of the strain on the food and water needs.