this post was submitted on 17 Feb 2024
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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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Big cars are dead weight dragging down climate policy (ketanjoshi.co)
submitted 8 months ago by silence7@slrpnk.net to c/climate@slrpnk.net
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[–] invertedspear@lemm.ee 53 points 8 months ago (2 children)

The US government of yesteryear recognized a problem, so they drew up legislation intended to improve fuel efficiency, and thus reduce emissions. But they recognized that certain trades required large vehicles that could never be that efficient. So they built in a loophole for vehicles over a certain size not counting towards the requirements being placed manufacturers. Manufacturers being the crafty hogs they are realized if they just increased the size of everything they wouldn’t have to follow any of the rules. Now you have a company like Ford that only has one actual car ( a muscle car at that) in its lineup. Everything else are trucks suvs and crossovers.

The government of today could rewrite these rules to make the loophole require business licenses or something else, but half of them refuse to see there’s a problem at all, and half of what’s left are in the pocket of the problem makers.

[–] Poggervania@kbin.social 32 points 8 months ago

What’s more interesting is that if you go overseas and look at the same brands, you can see companies like Ford and BMW selling station wagons and normal-sized cars without a single truck, if any, available for purchase.

Not Just Bikes has a great video on this.

[–] droans@lemmy.world 16 points 8 months ago

The Obama admin began changing CAFE to use a whole-fleet average which would have closed the large vehicle loophole.

The Trump admin reversed that and pushed to eliminate CAFE altogether.