this post was submitted on 27 Nov 2023
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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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[–] grue@lemmy.world 5 points 11 months ago (1 children)

No, but looser zoning codes can. We need more multi-family housing and less single-family housing, both because sharing walls between units saves energy on heating and cooling and because walkable dense development saves energy on transportation.

[–] lewdian69@lemmy.world 0 points 11 months ago (1 children)

Right? If since 1988, 100 companies have been responsible for 71% of global greenhouse gas emissions, then housing codes are gonna do fuck all.

[–] grue@lemmy.world 4 points 11 months ago* (last edited 11 months ago) (1 children)

That's not what I was saying at all.

What I was saying is that single-family house in a car-dependent neighborhood, even one that's a net-zero passivehaus, is likely to cause more overall greenhouse gas emissions than an apartment in a walkable city center, even an old, uninsulated one, simply because the former forces the occupants to drive everywhere but the latter doesn't.

Sure, we need to regulate industrial emissions at the source instead of transferring blame to consumers, but housing and transportation emissions have nothing to do with that. Increasing energy efficiency of housing really would do a lot to lower emissions, but ending car-dependency of housing would do even more.

[–] lewdian69@lemmy.world -1 points 11 months ago* (last edited 11 months ago) (1 children)

"That's not what I was saying at all."

Oh that's too bad. Good that both things can be true.

"Increasing energy efficiency of housing really would do a lot to lower emissions, but ending car-dependency of housing would do even more."

And yet still be a drop in the bucket.

[–] grue@lemmy.world 2 points 11 months ago

And yet still be a drop in the bucket.

That's not true. Housing and (car) transportation are a large fraction of total greenhouse gas emissions.

[–] lntl@lemmy.ml 3 points 11 months ago (1 children)

it seems unlikely. could probably help and i figure the issue we've been having is more complicated than what can be accomplished with building codes alone.

[–] sodalite@slrpnk.net 2 points 11 months ago

yeah I'm thinking if anything it's maybe a step to prevent greedy real estate people from making matters worse in the interim. this sort of thing could force them to follow "green" rules during the transition to a larger more systemic overhaul.

[–] sonori@beehaw.org 1 points 11 months ago (1 children)

No, law of headlines that end in a question and all that, but they might help in some small way.

[–] sodalite@slrpnk.net 3 points 11 months ago

yeah, it's not gonna be one-thing solution, it's gonna take this plus a whole bunch of other stuff

[–] DessertStorms@kbin.social 1 points 11 months ago

Could Tougher Building Codes Fix Climate Change?

No.

The only way to no longer fix, but try to avoid the worst of, climate change, is to abolish capitalism.

No band-aid on a symptom of a cancer will fix the cancer, and as warm and fuzzy it might make some people feel to think we can just regulate or reform our way out of this shit, that's never going to happen, and clinging on to these futile notions is not just ridiculous, but actively counterproductive (by shifting focus away from the only solution).