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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US to Cancel Billions for West Coast Hydrogen Hubs Amid Shutdown (www.bloomberg.com)
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[–] humanspiral@lemmy.ca 2 points 1 week ago

H2 is complimentary to batteries. You can discharge battery capacity that will recharge to full the next day. It's affordable enough to make already, and as a fuel, is tradeable/exportable power. Making H2 is needed to support more renewables so that surpluses aren't wasted.

Making H2 just doesn't stop you from using BEVs today or tomorrow. Faster charging for more range using a fuel that was made when, and priced because, it was conveniently sunny.

The world can get there without the US, and energy sabotage was always a GOP magnet. But anti-H2 sentiment, based on genuine disinformation, but ok perhaps overhyped Toyota prototypes prior to infrastructure maturity, has made adoption/progress slower, if only because renewables adoption has been slower than what was possible.