this post was submitted on 03 Jul 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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Company's carbon credits raise questions about unproven ocean technology to fight global warming (phys.org)
submitted 22 hours ago by solo@piefed.social to c/climate@slrpnk.net
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The startup Gigablue announced with fanfare this year that it reached a historic milestone: selling 200,000 carbon credits to fund what it describes as a groundbreaking technology in the fight against climate change.

the company says it has designed particles that when released in the ocean will trap carbon at the bottom of the sea.

Gigablue expects the carbon to be trapped there for hundreds to thousands of years.

While Gigablue has made several commercial deals, it has not yet revealed what its particles are made of. (...) "It's proprietary,"

The success of the company's method, they said, will depend on how much algae grows on the particles, and the amount that sinks to the deep ocean. So far, Gigablue has not released any studies demonstrating those rates.

"What we've got is a situation of a company, a startup, upfront selling large quantities of credits for a technology that is unproven,"

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[โ€“] _haha_oh_wow_@sh.itjust.works 6 points 22 hours ago (1 children)

Aren't carbon credits basically a scam anyways?

[โ€“] solo@piefed.social 5 points 22 hours ago

It's a buy your right to pollute scheme.

To my understanding, the overwhelmingly vast majority of carbon offsets and carbon credits are at best ineffective or at worst just scams. Consequently, they lead to more emissions and are used to delay the phasing out of fossil fuels.