this post was submitted on 02 May 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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[–] StillAlive@piefed.world 7 points 1 month ago (2 children)

Fertilisers are made from oil. Kinda hard to eat something that is grown without fertilisers.

[–] Sheldan@lemmy.world 16 points 1 month ago (1 children)

There are fertilizers without oil production, it's just not scaleable in comparison and fell out of favor due to other stuff. But organic products without these kinds of fertilizers exist.

[–] tyler@programming.dev 5 points 1 month ago (1 children)

Then you get into herbicides and pesticides, both of which are majority oil. Even organic products use propane to control weeds.

[–] Sheldan@lemmy.world 2 points 1 month ago (1 children)

I don't think they use these two particular things, but different countries have different Standards. If you want to go that route, they also use tractors or other machinery using oil in some capacity.

[–] tyler@programming.dev 1 points 1 month ago (2 children)

Which two particular things? Organic farms use propane because they have to burn the weeds, they can’t do it any other way.

[–] Sheldan@lemmy.world 4 points 1 month ago (1 children)

There are other ways, in general.

[–] tyler@programming.dev 1 points 1 month ago

What other ways?

[–] jafra@slrpnk.net 2 points 1 month ago

Propane isn't the problem, at least here in germany. I used burning weeds only for some irrelevant cosmetic weed control.

But preparing the soil was done with a small 2cycles mortiser.

[–] Korhaka@sopuli.xyz 6 points 1 month ago* (last edited 1 month ago)

Everything I grow is without synthetic fertilisers. Though not easy to scale up.

Is it made of oil? Thought it was gas to produce the hydrogen, so it's only used because it's currently cheaper.

As renewable production ramps up and we get more time with free/very cheap energy, that might change the economics behind hydrogen production. So at least from a technical perspective it should be a fairly easy one to move off fossil fuels once we have more alternative energy sources.