this post was submitted on 29 Aug 2026
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Climate

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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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Dutch people cycle an average of 2.6 kilometres each per day. If this pattern was replicated worldwide, the study suggests, annual global carbon emissions would drop by 686 million tonnes.

This mammoth figure exceeds the entire carbon footprint of most countries, including the UK, Canada, Saudi Arabia and Australia.

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[–] HaraldvonBlauzahn@feddit.org 6 points 1 day ago* (last edited 1 day ago) (1 children)

People are not aware how wasteful cars with combustion engines are. If you go by a car to the next supermarket to buy a veggie pizza, the emissions from the car are likely higher than from your whole meal - 220 grams per person-kilometer.

Per kilometer, the carbon footprint of a car is about as high as seat in a passenger plane.

Trains are at a tenth of that.

Bikes practically at zero.

And bikes are the means of transport which statistically make your life longer , not shorter - cars mostly kill people by lack of movement.

[–] Initech_vs_Initrode@lemmy.zip 2 points 1 day ago (2 children)

As an American, the closest I've come up death, by far, is on bicycles. I'm also a motorcyclist, but my closest calls have been on bicycles.

I've also had bicycles stolen. Per mile traveled, it's amazing how often they're stolen.

Bicycling in America is a great way to put your life at risk and have to take a taxi home because someone stole your vehicle. If you try to improve it with things like "15 minute city" initiatives, right-wingers freak out about a conspiracy to control them. It sucks.

Fuck trains, too, at least in America. The other day, I had to wait almost half an hour while a cargo and lumber train blocked my path, switching cars on and off of a branch line. There were probably 50+ cars, idling in the heat for half an hour, all so that some train company can make a few bucks by abusing its employees, inconveniencing the public, and skip infrastructure maintenance on land that was granted to them generations ago.

[–] HaraldvonBlauzahn@feddit.org 1 points 19 hours ago

Yeah, America is fucked.

[–] mirshafie@europe.pub 2 points 1 day ago* (last edited 1 day ago)

I feel like we're kinda derailing the discussion if our point of reference is North America. You guys have spent generations building a car-centric society. The same is not true for most countries. You can fix it but your solution will probably involve a lot more public transit rather than bicycles.