this post was submitted on 02 May 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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[–] bingrazer@lemmy.world 2 points 13 hours ago

The problem with using wind and solar is that you’d need a lot of it due to the energy requirements. While both should be used extensively, there comes a point where the resources required (these would likely use precious metal catalysts) to build the CCS plants and all the power infrastructure for it and waste produced makes it the obvious choice to just use trees.

If you look at how trees function, it is an incredibly complex process with some rather extreme conditions which are difficult to replicate with machines. If someone does manage to get it done efficiently then that’s great (though I think this is unlikely). But I don’t want it to become like recycling did: an excuse for companies to do whatever they want. The original expression was “reduce, reuse, recycle” with recycling being the last resort, but now we never hear about the first two because they get in the way of obscene profit.