this post was submitted on 21 Jan 2026
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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.

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The details on this are not promising:

Nearly 23% of new vehicles sold in California in 2025 were considered zero-emission vehicles, though EV sales were down in the state and across the U.S. compared to the year prior.

...

In the fourth quarter of 2025, only 18% of new cars sold in the state were zero-emission.

It needs to be 100% in the not-very-distant future, and that's going to be really tough without a sharp reduction in prices, which isn't likely to happen due to tariffs pushing prices up.

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[–] zd9@lemmy.world 9 points 3 hours ago (1 children)

That's great as a start. It's not nearly enough, and cars aren't even the actual solution, but Americans have carbrains engrained in society.

[–] Tollana1234567@lemmy.today 4 points 2 hours ago

cali needed fast railway like a decade ago, to connect biotech, tech hubs so these jobs can be easily reached from the major cities.

[–] French75@slrpnk.net 3 points 3 hours ago (1 children)

EV sales will likely continue to decline because we've made charging obscenely expensive. It's typically >50 cents/KWh at retail, and if you charge at home, it's not much cheaper if you don't have rooftop solar. We've let PG&E and SCE kinda ruin this.

[–] MrMakabar@slrpnk.net 1 points 57 minutes ago

Is California not just made up of single family housing and very sunny everywhere? Seems like the ideal place to charge cars with solar at home.

[–] aleph@piefed.social 3 points 3 hours ago (1 children)

Tarrifs are just the short term obstacle. The greater, long term obstacles are America's over-reliance on cars and lack of EV infrastructure, along with the current generation battery technology no being quite there yet.

[–] French75@slrpnk.net 3 points 3 hours ago (2 children)

EV charging Infra is actually pretty good statewide these days, and battery range isn't bad. (I drive an EV regularly). The real challenge for EV sales is that fueling an EV has gotten more expensive than fueling a comparable gas car.

Agree on car reliance though. We've neglected building decent transit systems for generations.

[–] aleph@piefed.social 1 points 1 hour ago (1 children)

The infrastructure is pretty good in California, sure, but I was thinking more about the US as a whole.

Also, the problem with lithium-ion battery tech isn't just the range - it's the charging speeds, and the weight/cost of the battery packs themselves.

[–] French75@slrpnk.net 1 points 40 minutes ago

Ah, yeah, I missed that you referred to America. We do have it pretty good here in CA, and my use case is favorable for an EV. I'm able to charge at home, and rarely need to charge en route to get somewhere. Those few occasions when I do, the 10 mins to charge up isn't a big deal. If I couldn't charge at home, or regularly took very long trips, the EV wouldn't make sense.

As for the weight... I just looked and my EV (a model 3) is 50 pounds heavier than my other car (a Lexus hybird sedan). That's a pretty negligible difference. It's about 500 pounds heavier than the Honda accord I used to have. That's a more material difference, but not as big a deal as people online make it out to be.

[–] Tollana1234567@lemmy.today 1 points 2 hours ago (1 children)

if musk hasnt done his hyperloop scam, and elain chao dint block the funding we wouldve had it partway there.

[–] French75@slrpnk.net 1 points 2 hours ago

They are part of the problem, but inability or unwillingness to build quality public transit has been a problem in CA longer than they've been alive.