this post was submitted on 23 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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[–] Korhaka@sopuli.xyz 8 points 1 week ago (1 children)

Not used gas in years now, it's great. Heat pump didn't even cost that much really.

[–] eleitl@lemmy.zip 0 points 1 week ago (2 children)

Great it works for you personally. It doesn't work for most of energy-intensive industrial processes.

[–] liuther9@lemmy.world 1 points 4 days ago (1 children)

Its all about energy. Why should not it work? In engineering you can combine many different plants for processing

[–] eleitl@lemmy.zip 1 points 4 days ago

Energy is not fungible. For starters, look at EROEI (or ECOE) and differences in fluctuating and dispatchable power, and also price, e.g. hydrogen via water electrolysis from surplus renewable generation. In theory, a very high EROEI renewable source of cheap electricity could power a complex technological culture. In practice, existing sources fall wide of the mark. While we're already in the tail end of the fossil energy and resource age.

[–] Korhaka@sopuli.xyz 3 points 1 week ago

Then we should probably reserve what we have for those processes rather than just burning it for heat.

[–] dumnezero@piefed.social 3 points 1 week ago

Those shortages, combined with the effect of energy-related inflation on garment worker wages, will erode Bangladesh’s longstanding cost advantage over rival apparel factories elsewhere in the region.

Going to call this:

"Getting the renewablues."

[–] sik0fewl@piefed.ca 3 points 1 week ago (1 children)

Do they not watch the news? Oil is skyrocketing and it’s time to double down on fossil fuels.

[–] MrMakabar@slrpnk.net 3 points 1 week ago

Read the headline again....

[–] eleitl@lemmy.zip 1 points 1 week ago (2 children)

Except that electricity is not being used for large scale industrial processes like firing cement, bricks, glass, producing steel from ore, ferrosilicon or nitrogen fertilizer, etc.

[–] betanumerus@lemmy.ca 5 points 1 week ago* (last edited 1 week ago) (2 children)

One problem at a time. The way forward is to replace fossil wherever we can ASAP. That means some replacements happen earlier than others.

[–] budget_biochemist@slrpnk.net 3 points 1 week ago* (last edited 1 week ago)

Also, recycling steel/aluminium/glass are easier to switch to electric furnaces than production from raw materials, so as production shifts towards reuse it will provide a double benefit.

[–] eleitl@lemmy.zip 0 points 1 week ago (1 children)

We're not replacing fossil anywhere right now. Absolute fossil energy use grows and the renewable energy grows, while the fossil fraction remains effectively constant at about 80%

[–] betanumerus@lemmy.ca 2 points 1 week ago (1 children)

Many people are, including me. You can too.

[–] eleitl@lemmy.zip 0 points 1 week ago* (last edited 1 week ago) (1 children)

I make most of my net electricity demand. But there is no energy transition visible in the world primary energy use.

[–] betanumerus@lemmy.ca 1 points 1 week ago (1 children)
[–] eleitl@lemmy.zip 0 points 1 week ago (1 children)
[–] silence7@slrpnk.net 1 points 1 week ago (1 children)

It's a lot harder to see in primary energy use because fossil fuel use involves wasting 35% to 90% of the available energy. The impact of renewables is far larger when you look at useful energy

We might actually be at or near the point where fossil fuel use starts to fall, but that outcome is far from guaranteed

[–] eleitl@lemmy.zip 1 points 1 week ago (1 children)

Efficiency actually increases resource use, aka Jevon's paradox. And high-exergy energy sources don't help with high temperature (hence no heat pumps) industrial processes, high density energy sources (aircraft, ships, trucking and agriculture) and for chemical processes (air nitrogen fixation, steel). Also, current renewables have critically low EROEI (particularly when dispatchable) and cannot sustain their own infrastructure, being currently fossil fuel extenders, or multipliers.

This doesn't mean we need to rather use fossil fuel sources, since we're already in the tail end of the fossil age, and the decline will be swift.

[–] silence7@slrpnk.net 1 points 1 week ago

It can...but a lot of energy use is not constrained by availability or price, but by human time available. We can build renewables out fast enough to bring fossil fuel use down to zero. And we are on the cusp of actually achieving that

[–] JustEnoughDucks@slrpnk.net 1 points 1 week ago (1 children)

I am hoping that hydrogen can fill that gap. There is a lot wrong with it, but it can burn like gas and Europe has been building a bunch of infrastructure for it. I don't think it is suitable for consumers like they tried to push with hydrogen car ideas, but it seems like it would have its place with large electrolysis solar stations on industrial rooftops and compressors inside.

[–] eleitl@lemmy.zip 1 points 1 week ago

Unfortunately, the EU is only talking about hydrogen infrastructure, not building it. And they are also planning to kill off natgas edge infrastructure, which is suitable at least for hydrogen-natgas blends.