this post was submitted on 22 Aug 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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Scientists call for action to address air pollution from space launches (www.theguardian.com)
submitted 2 weeks ago by LadyButterfly@reddthat.com to c/climate@slrpnk.net
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[–] vk6flab@lemmy.radio 16 points 2 weeks ago* (last edited 2 weeks ago) (2 children)

What about satellite re-entry?

Starlink satellites are currently re-entering at a rate of about 1 a day ¹, accounting for about 40% of upper atmosphere pollution ¹. As of August 1, 2025, there are 8,094 Starlink satellites in orbit, of which 8,075 are working, with a total of 42,000 planned ².

Apparently, the next decade looks like 100,000 extra satellites ¹ in low Earth orbit.

¹ https://www.space.com/spacex-starlink-reentry-pollution-damage-earth-atmosphere

² ⁨https://www.space.com/spacex-starlink-satellites.html

[–] violetsoftness@piefed.blahaj.zone 6 points 2 weeks ago* (last edited 2 weeks ago)
[–] Fredselfish@lemmy.world 2 points 2 weeks ago

Yeah our future fucked

[–] hanrahan@slrpnk.net 1 points 2 weeks ago

Professor Sam Lawler on Mastodon is a great source about this issue.

@sundogplanets@mastodon.social