this post was submitted on 19 Aug 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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Why Can’t the U.S. Build 5-Minute E.V. Chargers? Chinese automakers have rolled out chargers that can mostly recharge a car’s battery in about five minutes. Yet U.S. technology lags far behind. (www.nytimes.com)
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[–] captain_aggravated@sh.itjust.works 3 points 3 months ago (1 children)

What does the charging cable look like?

It is my understanding that the cables used for most car charging stations are actually liquid cooled. There's only so thick and stiff you can make that cable before a significant number of people just can't physically plug in their cars. What kind of conductors do you need to pump a megawatt of power?

[–] Naz@sh.itjust.works 4 points 3 months ago (1 children)

It'd be a pretty thick cable to push 2500 amps on 480V - at least four braids @ 625A each.

It's ridiculous and I don't have the exact knowledge, haha

[–] captain_aggravated@sh.itjust.works 2 points 3 months ago

Apparently they're going to push 1000 volts at 1000 amps through it. Which...STILL!