this post was submitted on 02 May 2025
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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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[–] notabot@lemm.ee 14 points 1 day ago (4 children)

The biggest issue seems to be around a lake of thinking. Recycling used plastics into more plastic is certainly energetically infeasible, and letting plastics escape to contaminate the environment is also unacceptable. However plastic can be recycled, or perhaps reused, into other things, notably as a partial replacement for aggregate in concrete. This process is low energy, doesn't require sorting the plastic, and actually enhances the thermal and noise insulation properties of the concrete, whilst also reducing it's overall weight. There are undoubtedly other things a stable, non-biodegradable, waterproof and hardwearing substance could be used for given some though.

[–] MonkderVierte@lemmy.ml 1 points 19 hours ago (2 children)

Putting it in concrete just delays the inevitable.

[–] notabot@lemm.ee 2 points 17 hours ago (1 children)

It does, but it will also bind a lot of the micro plastic pieces into the concrete matrix, which, I think (and, again, as I said, I haven't actually gone looking for any research on this), would keep them from entering the environment. If the concrete is then recycled, typically by crushing and using as aggregate, it would further trap the particles. It's not a perfect solution, but I don't think there is a perfect solution to plastics in general, we just have to find less harmful alternatives.

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[–] jagged_circle@feddit.nl 1 points 18 hours ago

Probably designed by a nuclear engineer

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[–] underscores@lemmy.dbzer0.com 13 points 1 day ago (4 children)

Recycling rates are low, but I wouldn't quite call it a myth. There's a lot of materials that get lumped together as 'plastic', that each have to be handled differently.

Some are relatively non-toxic and easily recycled. More can be, but aren't profitable without incentives. Some are very toxic, and recycling those are difficult. Then there's a lot of rarer types that make it hard to collect and sort. There's also mixed materials, where it's hard to separate the plastic to recycle.

Generally everyone should be minimizing plastics, but check how they're handled locally so you know what's recylable.

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[–] EtherWhack@lemmy.world 5 points 19 hours ago

I really can't wrap my head around this... (https://www.cbsnews.com/sanfrancisco/news/project-earth-frugalpac-sustainable-wine-bottles-recycled-cardboard-central-california/)

The idea has absolutely no foresight. They want to "lower the carbon footprint" by putting less carbon in the atmosphere and polluting the future's soil and water even more.

[–] JubilantJaguar@lemmy.world 12 points 1 day ago* (last edited 1 day ago)

Convincing detail here.

The priority is to keep used plastic out of the environment, which generally means out of waterways.

[–] MNByChoice@midwest.social 4 points 22 hours ago

If only some government somewhere on Earth had sponsored research on this. We could have known.

Or we did and no one cared.

Remember, if one depends on the media for information, you only get information dumb people can understand.

[–] Gsus4@mander.xyz 3 points 21 hours ago (1 children)

The only safe way to dispose of plastic is to incinerate it...maybe it can replace some fossil powerplants...idk.

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[–] warrenson@lemmy.nz 6 points 1 day ago

These guys are recycling, but I'm not sure it's the recycling most of us have in mind. Toxic tofu (YouTube)

[–] stinky@redlemmy.com 1 points 21 hours ago

Hahahaha! .... oh

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