this post was submitted on 28 Oct 2025
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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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Bill Gates Says Climate Change ‘Will Not Lead to Humanity’s Demise’ (www.nytimes.com)
submitted 4 weeks ago by silence7@slrpnk.net to c/climate@slrpnk.net
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My interpretation is that he's trying to fit in with the rest of the billionaire class, which is almost entirely on board with Republicanism.

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[–] artifex@piefed.social 29 points 4 weeks ago (2 children)

It will be very hard to exterminate humanity but climate change could make a pretty good try by collapsing ocean food chains or instigating a methane clathrate gun effect. Even if those don’t come to pass, the global south is gonna be fucked - maybe instigate-global-ecoterrorism kind of fucked.

[–] snooggums@piefed.world 10 points 4 weeks ago

Humanity will suffer massive population decline for sure, but we have spent thousands of years living in deserts and artic conditions so species survival is pretty much guaranteed no matter how terrible it gets.

It is unlikely that modern technology will be retained though. Just too many interconnected parts spread across continents to survive a mass population decline.

[–] notsosure@sh.itjust.works 3 points 4 weeks ago* (last edited 3 weeks ago) (1 children)

Why do you think that especially the global south will suffer from the climate collapse? From my viewpoint, once humanity speeds through the overshoot phase, the population will shrink on every continent, and that will lead to a global technological breakdown.

[–] artifex@piefed.social 4 points 3 weeks ago

Some models show that big swaths of the equatorial regions and the "monsoon belt" may become uninhabitable without AC because wet bulb temperatures will exceed 30C which is around the point where humans are no longer able to cool themselves. Since the global south is also less developed on average it means the electrical grid demand currently can't possibly handle that level of demand.