this post was submitted on 18 Jan 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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[–] HeroHelck@lemm.ee 32 points 2 days ago (3 children)

Correct me if I'm wrong, but isn't part of the problem that the auto industry wants to chase the higher profit margins on larger vehicles? As long as the perverse incentive is present it's going to be an uphill battle to get them to produce more compact, cost effective cars.

[–] shalafi@lemmy.world 9 points 2 days ago

EPA rules also play a part. Why we can't have small trucks:

https://www.google.com/search?q=Why+we+can%27t+have+small+trucks

Pick any source ya like.

[–] silence7@slrpnk.net 8 points 2 days ago

That's exactly the problem — in the US there's an extra tariff on larger vehicles, so the manufacturers face less competition and therefore earn greater profits if they only make big vehicles.

[–] cmhe@lemmy.world 2 points 2 days ago

An argument I heard was that larger and luxurious cars finance the technology development necessary to produce more economic cars. Which I guess is true to some extend.

But there are also many other aspects that favor large and expensive cars over cheap and economic. We still should demand tighter regulations on cars.