this post was submitted on 09 Mar 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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There are still hurdles to overcome, but growing the seaweed industry in a state known for lobster could be a win for local fishermen, dairy and cattle operations, and the planet.

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[–] FatCrab@lemmy.one 5 points 10 hours ago (2 children)

Ummm....that article says there was still a drastic methane cut, it was just ~20% after accounting for the longer life of the cattle due to unpredicted slower mass gain with the supplement. They had hoped for no changes to development of the cattle and around 80% or higher emissions cut. Article also makes it clear there were a lot of confounders in how they measured methane in the trial so this is realistically a great starting point and a strong show of the value proposition. Moreover, seaweed is good for water ecosystems so cultivating it at scale would be another value add. I don't eat farmed meat, but I don't expect that to ever be standard across the human species and this is certainly a strong improvement. You don't seem to understand what greenwashing is.

[–] veganpizza69@lemmy.vg 1 points 4 hours ago

, it was just ~20% after accounting for the longer life of the cattle due to unpredicted slower mass gain with the supplement.

Unpredicted is wrong there, there are many substances, additives, and outright plants that can be added to ruminant diets to reduce GHG emissions and that usually has consequences. The animal farmers have known about these for a long time as it's part of the "technology"; sometimes the additives reduce weight gain, sometimes they cause harms; sometimes the plants taint the meat or milk.

They had hoped for no changes to development of the cattle and around 80% or higher emissions cut.

Yes, it's a huge failure.

a great starting point and a strong show of the value proposition

It's not. This has been going on for years.

Here's a long article: https://etcgroup.org/content/seaweed-delusion

[–] Nyssa@slrpnk.net 3 points 8 hours ago (2 children)

Yeah, I think its useful to continue trialing out the technology and see if it can hold up to snuff. But at the same time banking on this idea as our only approach to decarbonizing protein (which is what the beef industry would prefer) is short sighted, imo

[–] Beastimus@slrpnk.net 3 points 7 hours ago

Yeah, decarbonizing meat without reducing consumption isn't gonna be a long term solution, but if it works, it can be a part of it. Hoo ha diverse tactics!

[–] FatCrab@lemmy.one 1 points 6 hours ago

Absolutely. There is no single solution to our environmental situation, but that also means that individual solutions shouldn't be dismissed out of hand because they aren't themselves that non-existent magic bullet.