this post was submitted on 01 Oct 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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Appliance makers balk at Trump’s latest climate rollback| The Environmental Protection Agency said Tuesday it would rewrite a Biden-era rule aimed at limiting hydrofluorocarbons, a potent GHG (www.washingtonpost.com)
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[–] Rentlar@lemmy.ca 7 points 2 days ago

In electrical distribution, there are plenty of alternatives, I've worked with electrical utilities for a little. In that city, most residential transformers and some legacy switchgear (some up to 80 years old) use mineral oil. In the 90s SF6 switchgear was common to be installed, but the current models of medium-voltage switchgear have neither. And some modern commercial alternatives are appearing for transformer winding isolation and coolant.

The issue comes with higher-voltage switching, such as at substations. If you want to use air separation there, then you'll need lots and lots of space between to prevent arcing. Since that is not always achievable, that's where vacuums or agents like SF6 are used instead.