this post was submitted on 14 Nov 2025
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Climate - truthful information about climate, related activism and politics.

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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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The climate crisis is expensive: net zero is cheaper for Australia than not doing more (www.theguardian.com)
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[–] humanspiral@lemmy.ca 2 points 1 week ago

It is both not useful and false to model GDP under global warming.

Higher insurance, higher HVAC energy consumption, higher food water and natural fiber prices, and higher reconstruction activity after floods, storms, forest fires all increase GDP. GDP doesn't care if you are spending more to survive or buying a bigger yacht.

Death from disasters, heat, or unaffordable cost of living, and lower property values from both insurance costs and drought driven poor agriculture productivity is a loss in real wealth, where life/health is included in wealth.

Cost of global warming is only the latter, and cost of survival.