this post was submitted on 03 May 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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Climate change could create a financial “death spiral” for regions of America (insideclimatenews.org)
submitted 2 weeks ago by relianceschool@slrpnk.net to c/climate@slrpnk.net
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A trifecta of crises—accelerating climate change, a scarcity of affordable housing and escalating insurance rates—are threatening the one place where people usually feel secure: their homes.

“The cost of property insurance was a topic most people ignored, but it’s now a kitchen table economic issue for many families, and a risk factor for the housing market,” said Sarah Edelman, former deputy assistant secretary for single family housing at the U.S. Department of Housing and Urban Development.

Current homeowners are more likely to become delinquent on their mortgages after an insurance premium increase. Prospective buyers can’t find or afford homes. Developers can’t bring new units to market. And operating costs for landlords can reach an unsustainable level, Edelman said, with effects trickling down to real estate agents, the lenders, mortgage services—the entire housing ecosystem.

Compounded by climate change, the insurance crisis could destabilize the entire financial system, said Anne Perrault, senior policy counsel for the Climate Program at Public Citizen. ”In some ways, it’s just the beginning of a death spiral for some regions of our country.”

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[–] humanspiral@lemmy.ca 2 points 1 week ago

This is indeed the biggest near term cost/impact of global warming. Sea level rise is a mostly slow process, though that too will show up in insurance rates before property is condemned. Much of the slash and burn to federal agencies is simply downloading costs towards states, municipalities, and private insurance. It is not societal savings, in addition to eliminating generally useful functions that cost more if duplicated at each state level.