this post was submitted on 29 Apr 2025
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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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Building a World Without Carbon Requires Megaproject Thinking (rooseveltinstitute.org)
submitted 4 months ago by silence7@slrpnk.net to c/climate@slrpnk.net
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[โ€“] Tiresia@slrpnk.net 4 points 4 months ago (1 children)

Megaprojects are too small. The Manhattan Project didn't have its effect on the shape of war in its purview, the Apollo Program did not question the value of one-upmanship vs the USSR, the Three Gorges Dam did not concern itself with the decision making process for the industrial consumption of its electricity.

This requires thinking on the scale of planned economies, geopolitics, and ideology. We have to dismiss GDP and profit as a measure of success and find measures that indicate long term stability; to redesign the mandate and authority of the UN and IMF to liberate the global south and workers around the world from a life of miserable neocolonial overproduction; to choose a shape of laws and education and social norms that stops promoting overconsumption and focuses on the best things in life being free.

[โ€“] jimmy90@lemmy.world 2 points 4 months ago

could start with a cheeky little megaproject first to see if the tech works