this post was submitted on 21 Nov 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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New England kicks off $450M plan to supercharge heat pump adoption (www.canarymedia.com)
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[–] MelodiousFunk@slrpnk.net 1 points 1 day ago (2 children)

The big change that's happened recently (if I understand correctly) is that there's been a big upswing in usability/efficiency in colder temps. The newer models continue working well below freezing, and don't necessarily require a traditional heating system for backup.

[–] 4am@lemmy.zip 2 points 1 day ago

Also using DC motors apparently is making a big impact in efficiency as well especially in window units

[–] halcyoncmdr@lemmy.world 1 points 1 day ago

If by recently, you mean decades. Cold climate heat pumps have been able to handle temps down to -30F for quite a while.

The recent difference is just that they're now being advertised, have articles being written about them, and most importantly... government subsidies to upgrade.