this post was submitted on 06 Mar 2026
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Climate

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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:

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

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40% of global ship traffic is simply moving fossil fuels around! Renewables make much of this traffic obsolete (slrpnk.net)
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[โ€“] MisterD@lemmy.ca 2 points 4 hours ago (1 children)

Hydrogen is coal with extra steps. It takes a lot of energy to make hydrogen

[โ€“] catdog@lemmy.ml 1 points 3 hours ago

Offshore wind and onshore solar excess can be used to produce hydrogen, not coal.

It takes extra steps and introduces inefficiencies, but it is able to store larger amounts of energy than batteries, and can be used in certain industrial processes which do not run on wires and electrons.

In a succesfully electrified world, it is likely that some ammonia and hydrogen is shipped around the world for such use cases. The main alternative is to keep using fossils.