this post was submitted on 02 Mar 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:

Anti-science, inactivism, and unsupported conspiracy theories are not ok here.

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[–] piccolo@sh.itjust.works 11 points 18 hours ago (1 children)

It is a net positive than what we're doing now. But doesnt resolve the problem of individual vechile reliance.

[–] resipsaloquitur@lemmy.world 0 points 16 hours ago* (last edited 16 hours ago) (2 children)

Is that clear? What I’ve heard (and believe) is that keeping your old clunker is the most environmentally friendly thing to do. If you don’t think the environment begins and ends at the tailpipe, that is.

Well, the most environmentally friendly thing you can do is move to a walkable neighborhood, work from home, and ride a bicycle to drop the kids off at school.

People want to vote with their dollars and feel smug without doing any research or making any compromises to their lifestyle, though.

[–] LibertyLizard@slrpnk.net 3 points 15 hours ago (1 children)

It depends on the electricity fuel blend. So in the past if you had a lot of coal it could take a long time to "pay back" the carbon cost of a new EV. But as more and more renewables are coming online that payback period is getting shorter and shorter. In most places if they've put at least some effort into bringing down carbon emissions, EVs are a substantial improvement.

Of course, walking, biking, transit are all far superior. But if those aren't viable for some trips then EV is the next best option.

[–] resipsaloquitur@lemmy.world -2 points 15 hours ago (1 children)

I mean, 21% renewable isn’t great. And I’d argue hydro has some environmental impact.

[–] LibertyLizard@slrpnk.net 6 points 15 hours ago

They all have environmental impacts but every serious modern study I've seen concludes EVs are better, often substantially better.

[–] piccolo@sh.itjust.works 0 points 15 hours ago (1 children)

How many 20plus year old cars do you see? People obviously are replacing them. And theres other reasons to replace old cars other than fuel economy such as safety improvements.

[–] resipsaloquitur@lemmy.world -1 points 15 hours ago* (last edited 15 hours ago) (2 children)

Where do you get “20 years?” And what does that matter? I mean, yeah, I do. Some prime mid-2000s Altimas with destroyed bumpers roll around my neighborhood.

The average lifespan of a car is 10 years. I buy 5-year-old cars and keep them for another five. If it’s undriveable, a scrap yard can part it out and keep similar cars on the road longer.

I notice you conveniently ignored the points I made about things that would actually be good for the environment. Your EV isn’t reducing all the other harmful effects of driving aside from carbon dioxide, and even that’s not a clean win.

[–] silence7@slrpnk.net 1 points 12 hours ago (1 children)

10 years sounds shockingly short. My impression is that the average car lasts about 20 years. Lots of older cars still on the road.

[–] piccolo@sh.itjust.works 1 points 15 hours ago* (last edited 15 hours ago) (1 children)

Ok... so when you drive every single vehicle into the dirt now what? Stop being dense.

Also i didnt ignore your point. You just expanded on my point. So thanks i guess.

[–] resipsaloquitur@lemmy.world -1 points 15 hours ago (1 children)

I already said “now what.”

One of us dense — that we can agree on.

[–] piccolo@sh.itjust.works 0 points 15 hours ago* (last edited 14 hours ago) (1 children)

You litterally said the "average lifespan of car" is 10 years. Which means wait for it... people replacing them with new vehicles. You and I in agreement that the true solution is reducing personal vehicles dependency. But you trying to discourage EV adoption isnt helping anyone.

[–] resipsaloquitur@lemmy.world 0 points 14 hours ago* (last edited 14 hours ago) (1 children)

Where did I say people shouldn’t buy an EV? I said keeping your current car, given it’s driveable, is more environmentally friendly than buying a new car.

Are you able to win an argument against anyone but a strawman?

[–] piccolo@sh.itjust.works 1 points 14 hours ago

Speaking of strawmans... Point me at the person that ever said replace functional vehicles with new EVs?