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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[–] [email protected] 14 points 4 days ago (7 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.

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[–] [email protected] 14 points 4 days 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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[–] [email protected] 12 points 4 days ago* (last edited 4 days ago)

Convincing detail here.

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

[–] [email protected] 42 points 4 days ago (6 children)

Right now it looks like paper and metal recycling is still good as far as I can read in two minutes. If someone has a correction let me know.

[–] [email protected] 18 points 4 days ago (2 children)

Yeah same and I hate when people just say well might as "well not recycle at all then" :/ that kind of defeatism doesn't help either

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[–] [email protected] 35 points 4 days ago* (last edited 3 days ago) (3 children)

Correct. Paper (PS: or at least brown cardboard), glass and alu will always be great candidates for recycling.

[–] [email protected] 45 points 4 days ago (1 children)

Aluminum is the poster child for recycling, really. It takes more energy to extract it from the ore than it is to recycle it.

[–] [email protected] 23 points 4 days ago

Former aluminum process engineer: This^

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[–] [email protected] 94 points 4 days ago (6 children)

The price stuff can change through taxation that makes new plastic more expensive than recycled plastic.

As we all know, taxation is super popular and has never been controversial, ever.

At the very least flaskepant has worked great for like a century here in Norway. Always kind of surprising when other countries don't have it.

[–] [email protected] 33 points 4 days ago (5 children)

Most plastic can’t be recycled into something usable. Plastic degrades quite a bit with each recycling, leaving a bunch of microplastics behind (same thing with “biodegradable” plastic). It would be better to tax it enough (or ban it) to make it not used in certain applications.

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[–] [email protected] 6 points 4 days ago

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

[–] [email protected] 48 points 4 days ago (2 children)

Really annoyed to have believed in plastic recycling even into my thirties. Being an idiot is such a burden sometimes.

[–] [email protected] 22 points 4 days ago (1 children)

Ignorance is only bliss if you never find out. Rookie mistake.

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