this post was submitted on 12 Feb 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.

Recommended actions to cut greenhouse gas emissions in the near future:

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The first car-free community built from scratch in the US is starting to take off: 'For some, cars equal freedom, but for me, it's a restriction' (www.thecooldown.com)
submitted 9 months ago by neanderthal to c/[email protected]
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Also a huge number of people in the US travel to places that are walkable:

  • Disney World
  • Las Vegas (The strip is anyway)
  • DC
  • NYC
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[โ€“] [email protected] 1 points 9 months ago (1 children)

I'd argue cars are more necessary in Phoenix than most places. It is way too hot to walk more than a couple of blocks, so unless you can build dense enough to justify a public transit stop on every other corner...yikes.

[โ€“] aeharding 1 points 9 months ago

Cars don't 'solve' a climate being 'hot'. Tons of cities have existed for thousands of years in arid environments. You build the city respecting the environment, with more density and walkability, shade and vegetation.

The urban heat island is no joke and it's due to cars. Phoenix is a monument to humankind's stupidity and ignorance of a place's environment.