this post was submitted on 25 Mar 2025
36 points (100.0% liked)

Climate - truthful information about climate, related activism and politics.

6406 readers
428 users here now

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:

Anti-science, inactivism, and unsupported conspiracy theories are not ok here.

founded 2 years ago
MODERATORS
silence7@slrpnk.net
36
Solving cement’s climate problem | Concrete is the second-most consumed substance on Earth. The process of making its key ingredient, cement, creates major pollution. (yaleclimateconnections.org)
submitted 3 weeks ago by silence7@slrpnk.net to c/climate@slrpnk.net
4 comments fedilink hide all child comments
you are viewing a single comment's thread
view the rest of the comments
[–] TropicalDingdong@lemmy.world 5 points 3 weeks ago (1 children)

Concrete is a bit of a double whammy, because, typically, you are emitting CO2 during both the process of creating cement (to create high heat to drive oxygen off limestone), and then again when it cures.

Great source for information about concrete.

[–] Successful_Try543@feddit.org 3 points 3 weeks ago

Both contributions of the CO_2 emissions are from the production procedure: The CO_2 of the heat generation and CO_2 (not oxygen) being released from e.g. limestone CaCO_3 -> CaO + CO_2.