this post was submitted on 11 Feb 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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Airbus Drops Hydrogen As Aviation Industry Admits It Won't Fly (cleantechnica.com)
submitted 1 day ago by [email protected] to c/[email protected]
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[–] [email protected] 12 points 1 day ago (1 children)

The problem with "from water" is that it takes as much energy to separate the hydrogen and oxygen in water as you get back by oxidizing the hydrogen to produce water. You can't use water as a useful way to store hydrogen for energy because of that.

[–] [email protected] 0 points 21 hours ago (1 children)

Also, that’s our drinking water you’re turning into fuel.

[–] trailee 1 points 4 hours ago

Good thing people have been able to use untreated ocean water as the feedstock. It looks like it needs to be scaled up, but the economic advantage should help incentivize that (seawater is free; treated water is expensive!).