this post was submitted on 10 Sep 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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[–] namingthingsiseasy@programming.dev 28 points 1 year ago (2 children)

This is going to get a lot worse with electric vehicles because they weigh so much more in order to accommodate batteries (source)

No matter what, automobiles are going to wreak havoc on the environment.

[–] Nyssa@slrpnk.net 4 points 1 year ago (2 children)

I wonder if there's any data on how much bus tires pollute in this way on a per-passenger mile basis. I'm sure it's better than cars, but if it's still a major problem, I wonder if there's another way to manufacture less problematic tires. Maybe biodegradable?

[–] aeharding@lemmy.world 18 points 1 year ago

We had the solution for that 100 years ago. Streetcars were once the primary mode of public transit in hundreds of North American cities and towns.

  • Fully electric
  • No batteries
  • No tire emissions
[–] kaesaecracker@leminal.space 12 points 1 year ago (1 children)

I do not want my tires to degrade by themselves - the solution is walkable/bikeable neighborhoods and public transport

[–] Nyssa@slrpnk.net -5 points 1 year ago (1 children)

Yeah, but bikes and buses still use tires. I was just wondering how the tires we will need to use in the future can be manufactured to reduce the pollution problem

[–] Koppensneller@lemmy.world 11 points 1 year ago (1 children)

To think that the pollution from tire wear on bikes and buses is even in the same magnitude as that on cars is deluding yourself.

[–] Nyssa@slrpnk.net 2 points 1 year ago (2 children)

Im not saying they're apples to apples, I'm saying that I was just wondering if we could design tires that were less conducive to creating microparticles

[–] Wogi@lemmy.world 4 points 1 year ago

No.

It doesn't matter what they're made of, either the street or the tire is going to break down due to friction. One of two things is being washed down the drain. And you don't want it to be the road.

You could design both road and wheel to be steel, those would break down the least, but steel wheels need tracks and then you're back to street cars. Which are great, by the way.

For a less disruptive solution, no current material matches the qualities of vulcanized rubber that we want for tires. The rubber we use on tires is relatively slow to break down, can hold pressure, makes good contact with rough surfaces, and is cheap.

If you can design a material that's better for the environment that does all of that, you'll be a billionaire within a year.

That’s why trams and trains are useful. Metal wheels. Upfront costs are higher but ongoing maintenance costs are much lower.

[–] Delusional@lemmy.world 1 points 1 year ago (1 children)

Guess we're all going back to horse drawn carriages with wood wheels.

[–] pedz@lemmy.ca 4 points 1 year ago

Have you heard about trains? More than a hundred years ago people could go from one village to another using a network of railways. My rural region had multiple stations and it was possible to go in cities that now require a car to do so.

And now I'm cycling on some of that old disused railway network. In rural regions too!

It's obvious that it's not everyone that can do with a cocktail of transport and take trains or bike everywhere, but reducing the number of cars by offering options that were existing a century ago could be a good place to start, instead of trying to save the polluting and inefficient car industry.