this post was submitted on 21 Jun 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.

Recommended actions to cut greenhouse gas emissions in the near future:

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Offsetting global fossil fuel stores by planting trees is impossible (www.newscientist.com)
submitted 3 weeks ago by [email protected] to c/[email protected]
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Archived link of the article

It would be nearly impossible to plant enough trees to compensate for the climate impact of burning through the world’s fossil fuel reserves. Offsetting the estimated 182 billion tonnes of carbon held in the reserves of the world’s largest fossil fuel companies would require covering more land with trees than the entirety of North and Central America.

“There simply isn’t enough land available for the level of afforestation that would be needed to offset fossil fuel-related emissions,”

The study: Carbon offsetting of fossil fuel emissions through afforestation is limited by financial viability and spatial requirements

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[–] [email protected] 3 points 3 weeks ago

Also it takes decades for trees to start capturing a significant amount

[–] [email protected] 20 points 3 weeks ago (1 children)

I've been saying this for years. Honestly, the whole carbon offsetting thing is very similar to the men will do anything but go to therapy meme. We are willing to just about anything other than CUT EMISSIONS.

Further what's planted is often a monoculture, and does not restore the ecosystem lost.

[–] [email protected] 5 points 3 weeks ago (1 children)

I think it's brought up a lot in terms of undoing the damage. Even if we cut emissions to zero today, that doesn't fix all the carbon that's already been put out over the last 100-150 years. We need both reduced emissions to prevent damage and carbon capture to undo preexisting damage.

[–] [email protected] 1 points 3 weeks ago

I agree, but a lot of the sequestration options out there suck. By all means replant, but do it wisely. Geological storage has been shown to be way less efficient than desired.

There is some promise in C sequestration in tailings, because it's permanently bound, but it's situational.

[–] [email protected] 9 points 3 weeks ago (1 children)

Offsetting the estimated 182 billion tonnes of carbon held in the reserves of the world’s largest fossil fuel companies would require covering more land with trees than the entirety of North and Central America.

I am on board with this. We can live Ewok-style. I can’t solve for the farming problem though.

[–] [email protected] 4 points 3 weeks ago* (last edited 3 weeks ago)

Actually, we would be fine if we just stopped eating as much meat. I don’t remember the exact amount, but getting our protein from animals requires many times the acreage compared to getting our protein from plants.