this post was submitted on 07 Jan 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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[–] chetradley@lemmy.world 22 points 10 months ago (1 children)

It looks like you're citing the EPA estimates for US GHG emissions by sector: https://www.epa.gov/ghgemissions/sources-greenhouse-gas-emissions

Unfortunately this is only a small part of the overall picture. For instance, it notably doesn't include carbon sinks (areas that have a net reduction of GHG) like protected wild lands. One of the biggest climate issues is deforestation, since it not only produces emissions, but also damages the earth's ability to sequester CO2. https://thehumaneleague.org/article/meat-industry-deforestation-cop26

In fact, if you look at total land use, an alarming percentage of habitable land is being used to produce meat and dairy, accounting for a relatively small percentage of protein and calorie consumption.

You also have to be careful using GHG emissions as your only metric. Animal agriculture is a major contributor to many of the environmental issues we face:

Biodiversity loss and mass extinction attributed to deforestation and use of land for agriculture.

Antibiotic resistant bacteria resulting from overuse of antibiotics to promote livestock growth.

Eutrophication and dead zones from fertilizers used to produce animal feed and runoff from farms.

Zoonotic diseases which very often originate in livestock before jumping to humans: see swine flu, avian flu, etc.

Additionally, the claim that eliminating livestock would result in a 1:1 replacement in wild mammals is patently false. Livestock is farmed intensively, whereas wild animals live in areas that are, again, carbon sinks. Just looking at the numbers, wild mammals are only a tiny fraction of mammalian biomass, with the vast majority being humans and livestock.

Considering the greater picture, the best bet is for those who are able to eliminate their consumption of animal products to do so.

[–] abraxas@sh.itjust.works 5 points 10 months ago (1 children)

He was actually unfairly charitable be looking at global figures. Unfortunately, the "meat problem" is largely Africa, India, and China. Yes, about 20% of US meat comes from those regions because it is cheaper. But it is entirely sustainable for countries like the US, one of the largest meat consumers, to produce all the meat we consume and stay well within reasonable greenhouse gas footprints.

Your reply to him unfaortunately made the same mistakes his statements did. If you laser-focus at the countries where most vegans are pushing to make changes, it takes bad-faith analysis of figures to see the meat industry as anything but entirely sustainable.

People who want meat-eating to stop have an agenda. People who want to farm meat have an agenda. You have to look through TWO agendas, not just one, to find the real answers.

[–] Fleur__@lemmy.world 3 points 10 months ago (1 children)

I'm baffled as to why you would say this after a comment that is literally just objective truths

[–] abraxas@sh.itjust.works 2 points 10 months ago

I answered how I would say that by actually describing my criticisms in some detail.