this post was submitted on 25 Nov 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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Collapse of Earth's main ocean water circulation system is already happening (www.earth.com)
submitted 3 weeks ago by floofloof@lemmy.ca to c/climate@slrpnk.net
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[–] NocturnalMorning@lemmy.world 2 points 3 weeks ago* (last edited 3 weeks ago) (2 children)

Maybe, depends on how uninhabitable the planet actually gets. We think we know what that looks like, but there are pretty wide error bars around the worst case scenarios.

[–] Rolder@reddthat.com 2 points 3 weeks ago

Hmm, even if parts of the world become totally uninhabitable, this would also mean that other parts of the world will become more inhabitable. Usually arctic areas further away from the equator.

So yes there would be a lot of death and suffering but I don’t think we’d go 100% extinct.

[–] protist@mander.xyz 1 points 3 weeks ago (1 children)

There's no climate scenario short of nuclear winter that renders the planet completely uninhabitable by humans though. We're not facing a situation like The Road where the sunlight is completely blocked, killing every plant. Even with the worst case climate change scenarios, people are going to be able to find habitable areas and move plants to new regions where they will grow, or utilize technology to grow crops indoors, which already happens

[–] NocturnalMorning@lemmy.world 1 points 3 weeks ago (1 children)

It doesn't have to be completely uninhabitable for it to be uninhabitable for humans.

[–] protist@mander.xyz 0 points 3 weeks ago* (last edited 3 weeks ago)

The word "uninhabitable" usually means whether humans can live there, and I specified I was talking about humans. The earth is not going to become completely uninhabitable by humans. I'm saying you're wrong when you said "this is the last generation of humans on earth."