this post was submitted on 17 Dec 2024
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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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[–] danciestlobster@lemm.ee 2 points 19 hours ago (1 children)

This is a genuinely nice sentiment, but it is worth noting that the world is way more populated than most past generations, and while any hope for us will fall largely on the squares of future generations, their job would be so much easier if there were a lot less of them.

Some developed countries seem to have this notion that declining birth rates will be the end of them and while that can be somewhat true for how economic systems are set up, the world was objectively a lot more sustainable before the boomers generation, population wise

[–] Tiresia@slrpnk.net 1 points 1 hour ago

Economic sustainability has almost nothing to do with population size. The vast amount of unsustainability comes from wasteful consumerism. Furniture that lasts years instead of centuries, clothes that last months instead of decades, holidays 10,000 km away instead of 1 km away, single-use plastics for every single thing, etc.

People that live within an ecosystem have net negative emissions if they care to put in the effort. Every person that exists can live and work to make things better, so how can it be a disadvantage to have more of them?

There is a point when every bit of nature has a steward tending to its development/survival/recovery closely enough that another person won't be a net ecological benefit, but with a global population density of one person per two hectares we're not there yet.