this post was submitted on 10 Jul 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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Summers have been heating up for decades, and they’ll only get hotter if heat-trapping pollution continues — making future summers in Minneapolis feel more like current summers in Tulsa.

With high levels of heat-trapping pollution, future summer high temperatures in 247 major U.S. cities would heat up by an average of 3.6°F by 2060 and 7.9°F by 2100. This analysis shows how future warming could transport a city’s current climate to an entirely different part of the country — or the world — with reduced commitments to lower carbon pollution .

On average, summer high temperatures across the 247 cities analyzed are projected to increase 3.6°F by 2060 and 7.9°F by 2100. Mitchell, S.D. is projected to warm the most by 2100 (11.1°F), when it will feel more like Wichita Falls, Texas.

By the end of this century, summers in the cities analyzed would shift to resemble hotter locations an average of 437 miles to the south. For 16 U.S. cities, there is no equivalent in North America to how hot they’d be in 2100. Their future summers are more similar to current conditions in Pakistan, the Middle East, and North Africa.

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