this post was submitted on 14 Apr 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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US Treasury Secretary Bessent Questions the Cause of Climate Change and Its Economic Toll | Natural factors like the sun, volcanic eruptions, etc. would be cooling the earth absent human action (www.nytimes.com)
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Leading scientists have rejected claims like Mr. Bessent’s, and noted that natural factors like the sun, volcanic eruptions and orbital cycles would be cooling the earth if not for human activity. Instead, about 200 years ago, after the start of the Industrial Revolution, the direction of global temperatures reversed and began rapidly warming.

...

Average global temperatures are expected to rise 1.5 degrees Celsius (2.7 degrees Fahrenheit) above preindustrial levels within the next decade. That would unleash dire impacts that include increased and more intense heat waves and heavy precipitation, melting of the world’s glaciers and ice sheets and a higher risk of severe wildfires.

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