this post was submitted on 16 Feb 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.

Recommended actions to cut greenhouse gas emissions in the near future:

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Carbon capture more costly than switching to renewables, researchers find (techxplore.com)
submitted 6 days ago by iamroot@discuss.tchncs.de to c/climate@slrpnk.net
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[–] tunetardis@lemmy.ca 4 points 6 days ago

I have no doubt that renewables are the lowest hanging fruit at the moment, and that we could get to net-zero mostly using them. But there is a big difference between mostly and entirely. As you approach the higher-hanging fruit, things get exponentially more expensive, and there may come a point at which some form of carbon capture is needed to cover that last segment of emissions? Also, I see no mention of nuclear here. I suspect it will need to play a role, though how large that would be remains uncertain. It should definitely be included in any cost analysis though.