this post was submitted on 09 Oct 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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Terradot, a carbon removal company, is using “enhanced rock weathering” to sequester carbon by spreading crushed volcanic rock over farmland. (www.washingtonpost.com)
submitted 1 month ago by silence7@slrpnk.net to c/climate@slrpnk.net
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In general, there are two big issues with this:

  • Mining, milling, and transporting rock is energy-intensive
  • They're selling offsets based on it, so the impact is to give somebody else permission to pollute

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[–] notsosure@sh.itjust.works 4 points 1 month ago (1 children)

As climate collapse is rapidly approaching (Or are we in the middle of it?) any avenue to reduce its impact must be explored. But I truly wonder, whether this idea is going to do any good. How much carbon dioxide will be produced during this process, and how much will actually be captured? How much of these rocks need to be produced, to lower the temperature by eg 1C?

[–] theneverfox@pawb.social 8 points 1 month ago

Bullshit any avenue must be explored!

So far we've explored avenues such as... Going out into the desert and releasing weather balloons full of pollutants, building giant machines to capture CO2 at enormous energy cost (with no way to store it anyways), and pretending to plant forests that already exist

We really need to stop exploring avenues and focus on the street