this post was submitted on 19 Jul 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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From David Sirota’s The Lever

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[–] xMadwood@lemm.ee 4 points 1 year ago (17 children)

The problem with redesigning cities is that they weren’t exactly built with the possibility of being redesigned in mind. You’re talking about a goal that is hundreds of years of incremental change away. Electric cars are part of the short term solution, but redesigning cities is a much much longer term solution.

[–] Rozauhtuno@lemmy.blahaj.zone 6 points 1 year ago (9 children)

The Netherlands did it in about 30 years, and nowadays we have more knowledge on how to build efficient cities, it can be done.

The US is a different beast from European countries, sure, but it doesn't mean it's impossible or that changing would literally take centuries. And even if it did require hundreds of years, isn't that more a reason to start as soon as possible?

Electric cars are part of the short term solution

Electric cars aren't here to save the planet, they're are here to save the auto industry. The solution is ditching euclidian zoning and increasing bike lanes and public transport.

[–] postmateDumbass@lemmy.world 1 points 1 year ago (3 children)

euclidian zoning

I think you should use 'cartesian zoning' unless you have a flat earth agenda.

[–] StrayCatFrump 0 points 1 year ago* (last edited 1 year ago) (1 children)

That aside is both a nitpick (the curvature of Earth is small enough on the local scale of a city that the differences are negligible) and it is wrong, as cartesian coordinates are planar and aren't useful for accounting for spherical curvature. "Euclidean" and "cartesian" are basically synonyms for this purpose.

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

Euclidian geometry is used for things on a globe.

non-euclidian spaces are those that are not spherical. Such as a flat earth.

Caretesian means to exist in an X-Y plane. Such as a grid in a city. Seems closer to your seeming intent.

[–] StrayCatFrump 0 points 1 year ago* (last edited 1 year ago)

Euclidian geometry is used for things on a globe.

non-euclidian spaces are those that are not spherical. Such as a flat earth.

This is incorrect. Euclidean geometry deals with planar geometry such as that which cartesian coordinates are used to describe. I mean, here's a quote from Wikipedia:

More generally, n Cartesian coordinates specify the point in an n-dimensional Euclidean space for any dimension n.

Spherical surfaces are even used as kind of the classical example of non-Euclidean geometry. For example, you can form a triangle along great circles on the surface of a sphere and have all three angles be right angles (90-90-90); something not possible in Euclidean/planer geometry. See the linked text.

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