this post was submitted on 05 Feb 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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[–] UnderpantsWeevil@lemmy.world 7 points 11 hours ago (4 children)

Has anyone ever actually selected a flight based on it's carbon impact?

[–] snowdriftissue@lemmy.world 5 points 8 hours ago* (last edited 8 hours ago) (1 children)

Yeah a carbon tax would be much more effective. Policy that only informs consumers is generally not very impactful.

[–] UnderpantsWeevil@lemmy.world 1 points 8 hours ago (1 children)

I mean, alternative means of mass transit would be the most effective policy. But we can't even get a rail line between Houston and Dallas, despite the airspace maxing out and there existing an enormous profitable and general economic benefit to its construction.

Taxes keep the marginal participant out of the market. But the real goal should be to move people and cargo at maximal efficiency, not just to hobble lower income travelers with a consumption tax.

[–] snowdriftissue@lemmy.world 0 points 8 hours ago (1 children)

alternative means of mass transit would be the most effective policy.

Why not both?

between Houston and Dallas

Isn't this article about UK?

[–] UnderpantsWeevil@lemmy.world 3 points 8 hours ago* (last edited 8 hours ago)

Why not both?

You'd absolutely need to do both, unless you wanted all sorts of malformed incentives.

Generally speaking, the revenue from a pigouvian tax needs to be spent mitigating the problem that generates the revenue. Otherwise, you end up with something of a Cobra Problem, wherein excess consumption is seen as a revenue driver that the state subtly promotes.

Isn’t this article about UK?

I'm just speaking from personal experience.

If you want to talk shit about the UK, you can always point to HS2. Cancelled out of spite by the outgoing Conservative government. Chronic mismanagement of the rail network has been a lead weight around the British economy for decades.

[–] silence7@slrpnk.net 2 points 10 hours ago

People are avoiding flying at all over it, which is why airlines don't want to disclose. Long trips by plane dominate yearly emissions for people who travel like that

[–] Pika@sh.itjust.works 1 points 9 hours ago* (last edited 9 hours ago) (1 children)

I personally might to be honest. If the pricing was similar and one airline had a lower carbon print I would choose the lower carbon print. (people like me is probably why they don't supply this info normally)

If there were enough people like me they would start cancelling flight lanes like we are seeing with the tourist trade with Canada and Florida. Air Canada alone has canceled over 10% of its CA to FL based flights due to lack of flyers (only about 20 flight lanes though, but that's still a good start).

[–] UnderpantsWeevil@lemmy.world 1 points 9 hours ago (1 children)

If the pricing was similar and one airline had a lower carbon print

Price and emissions tend to track one another, as the price of fuel is heavily baked into the cost of the seat. And everyone flies the same aircraft models. It's not like there's a "Low Emissions Boeing" or "EV Airbus" you can select.

[–] Pika@sh.itjust.works 1 points 8 hours ago* (last edited 8 hours ago)

I agree with that on direct plans. I don't agree with that on indirect lanes. the emissions to passenger ratio should be lower on a full 130 passenger jet that is going to another more populated airport nearby, and then hopping to the destination port with a lower passenger count(this would raise ticket prices some, but I wouldn't expect game changing amounts), than a direct flight plan that has a full jet one direction, and then only 1/4 occupancy on the direct route back.

I don't actually care about full emission count though, I just want the emissions to be used responsibly. a low passenger to emission ratio would be what I find the most useful, but I doubt its what anyone would actually supply.

[–] catdog@lemmy.ml 1 points 11 hours ago (2 children)

I think that's an oversimplification. Takeoff for one massively impacts carbon emissions, so direct flights are better than multiple transfers. Booking business class probably has an even larger effect. And the there's load averages and plane types.

[–] UnderpantsWeevil@lemmy.world 3 points 10 hours ago (1 children)

I guess heavy luggage might impact emissions marginally. But do you really believe the flight is staying on the tarmac because you didn't book a seat?

[–] catdog@lemmy.ml 1 points 10 hours ago (1 children)

To me, this comment completely contradicts the arguments in your previous comment. I'm curious to learn your actual opinion on the matter.

[–] UnderpantsWeevil@lemmy.world 1 points 9 hours ago

If I have a choice between two flights A and B, based exclusively on CO~2~ emissions, the only thing my selection changes is my body weight/luggage added to the flight. But the emissions calculation (as I understand it) is the total anticipated CO~2~ of the flight divided by the number of seats. And the bulk of those emissions come from lifting the plane itself, not the individual passengers.

The plane still flies whether or not I'm on it, though. So my choice of flight does not really impact emitted carbon.

[–] silence7@slrpnk.net 1 points 10 hours ago

It is a significant simplification, but people usually dont have many short flights on a trip. Its usually 1 or 2. Can be a huge improvement to get people onto electrified rail.

[–] heyWhatsay@slrpnk.net 6 points 11 hours ago (1 children)

One more bit of info people will ignore.

[–] Korhaka@sopuli.xyz 1 points 8 hours ago

6 tons on holidays this year? Well oil companies and China exist so I will ignore all personal responsibility.