this post was submitted on 03 Apr 2025
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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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With respect to nuclear energy, in what ways will it help alleviate the climate crisis and where will it not? (lemmy.dbzer0.com)
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Nuclear always comes up when discussing the energy transition but renewables seem to be a much more popular consideration. Can nuclear energy help us towards a greener future or is it a long dead dream?

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[–] RvTV95XBeo 0 points 2 days ago

That's not a bad article, but it's largely focused on debunking claims about renewables on today's grid (e.g., the false claims that they have somehow been responsible for blackouts in CA and TX).

I generally agree with the articles points, but what I'm talking about is a future grid with 90%+ renewable generation and limited geothermal/hydro resources.

It's purely a hypothetical at the moment because no one has come close and technology could advance quite a bit before the grid even reaches those limits.

That said, based on today's technology, under the right circumstances, nuclear can provide a cost effective means of closing the final gap in reaching zero-carbon electricity, but only AFTER we do the bulk of the work solving the other 90% of the problem which is installing more renewables and storage.