this post was submitted on 17 Jun 2024
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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.

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Construction equipment is going electric. Here’s what it’s like behind the wheel. (wapo.st)
submitted 1 week ago by [email protected] to c/[email protected]
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I tested a 55,000-pound electric excavator. New ways to power off-road machines, which mostly run on diesel, could cut about 3 percent of U.S. carbon emissions.

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[–] [email protected] -4 points 1 week ago (7 children)

Lol how do you think construction sites generate electricity to charge the batteries?

[–] [email protected] 12 points 1 week ago (1 children)

You're saying this like sort of gotcha, but larger generators can be a lot more efficient than a smaller engine so even running a large diesel generator 24/7 to charge a battery is likely an improvement over a gas powered digger. Same reason powering an EV with a coal power plant is still a win over a gas car, bigger engines are more efficient.

[–] [email protected] -3 points 1 week ago

Yeah I was aware of that as I posted it. I work on construction sites. More than anything I was highlighting how vehicles isn't the only problem.

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