this post was submitted on 05 Oct 2024
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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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Carl Sagan - 1985 testimony on climate change (US Senate) (www.youtube.com)
submitted 1 month ago by kalkulat@lemmy.world to c/climate@slrpnk.net
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"Witnesses testified on how the greenhouse effect will change the global climate system and possible solutions.”

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[–] idiomaddict@lemmy.world 6 points 1 month ago (1 children)

This is going to sound shitty, but I’m glad he didn’t live to see the now irrefutable evidence that we’re just burying our heads about this.

[–] kalkulat@lemmy.world 4 points 1 month ago* (last edited 1 month ago)

I noticed in that video how Al Gore looked as he listened. Sagan died in 1996. Gore released his documentary 'An Inconvenient Truth', 18 years ago in 2006. I believe Sagan would not have been surprised at the film's reception, nor surprised by how little impact it has had on effective response to the threats it outlined. You can lead a horse to water....