this post was submitted on 09 Dec 2024
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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.

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Car tires shed a quarter of all microplastics in the environment. Urgent action is needed (phys.org)
submitted 3 days ago* (last edited 3 days ago) by [email protected] to c/[email protected]
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Electric cars are not THE solution.

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[โ€“] [email protected] 2 points 3 days ago (1 children)

Rubber+friction=micro plastics

[โ€“] kitnaht 5 points 3 days ago* (last edited 3 days ago)

Rubber is quite literally the sap of a rubber tree. Latex. They mix other materials in with it, but this is one instance where I don't think the rubber is the issue.

It's the fillers they put in the rubber; Nylon, Rayon, Polyester, etc.

Tires are about 25% steel fibers, another 30%ish filler materials, and Rubber (either synthetic or natural)