this post was submitted on 02 Jan 2025
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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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[–] sonori@beehaw.org 0 points 4 days ago* (last edited 4 days ago)

Yes, the article was generally pretty clear that energy is synonymous with electricity, which is why it’s core thesis that renewables fundamentally cannot replace fossil fuel energy is such a wild assertion.

Yes we need to provide a decent quality of life, and that can be done with far less than north amarican standards of energy consumption, but the massive increase in energy consumption we’re seeing in India and China arn’t due to western levels of decadence, but rather the proliferation of things like air conditioning in places with fatal heat waves and the like.

Indeed illustratively these places are known for their abundant, frequent, and highly used mass transit systems and walkable cities. Their energy demand is still growing at an significant pace, not shrinking. As given their sheer size these are the nations which have a far larger impact on climate change, these are the places where degrowth needs to have the largest impact.

It’s also worth noting that even if you just want to apply degrowth to US cities in the method you suggested, well we know from examples like the Netherlands that it can be done and car centric cities converted into a place with just half of all residents own a car. We also know from that example that it took fifty years of dedicated government support and heavy local support to get that far. Meanwhile even L.A can take a decade and millions of dollars to not build a bus lane.

To note the obvious, we don’t have 50 years to get the US to moderately decrease emissions, and when accounting for things like construction emissions the gains are pretty small when compared to say electrifying Amaricas railroads or steel foundries.

This is not to say that things like walkable cities and such arn’t really nice things we should be doing, just that like many degrowth ideas they are both too slow to implement, to marginal an impact, and two specific to certain areas to really move the needle on weather we hit 2C, 2.5C, or 3C.

This is all of course tangential to the topic we’re actually talking about, which is wether or not electrification and building renewables is pointless when it comes to fighting climate change because they are apparently incapable of ever replacing fossil fuels.