this post was submitted on 02 Sep 2025
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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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Scientists May Have Identified a Culprit Behind Declining Amazon Rains | Deforestation is playing a greater role than researchers expected, according to a new study (www.nytimes.com)
submitted 6 days ago by silence7@slrpnk.net to c/climate@slrpnk.net
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The paper is here

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[–] ryannathans@aussie.zone -5 points 6 days ago* (last edited 5 days ago) (1 children)

Considering the Amazon rainforest is largely man-made, we'll just make it again

Read: https://en.wikipedia.org/wiki/Amazon_rainforest#History

The BBC’s Unnatural Histories presented evidence that the Amazon rainforest, rather than being a pristine wilderness, has been shaped by man for at least 11,000 years through practices such as forest gardening and terra preta.[20] Terra preta is found over large areas in the Amazon forest; and is now widely accepted as a product of indigenous soil management. The development of this fertile soil allowed agriculture and silviculture in the previously hostile environment; meaning that large portions of the Amazon rainforest are probably the result of centuries of human management, rather than naturally occurring as has previously been supposed.

[–] Jarix@lemmy.world 2 points 5 days ago (1 children)

The duck are you talking about?

[–] ryannathans@aussie.zone 1 points 5 days ago* (last edited 5 days ago) (1 children)

The amazon rainforest was not originally a large rainforest. The ground was essentially terraformed, made fertile and trees planted by the ancient amazonians over thousands of years

[–] ryannathans@aussie.zone 1 points 5 days ago (1 children)

Source: BBC unnatural histories, for over 11000 years the ground was terraformed with "terra preta" and forest was planted and converted

[–] ryannathans@aussie.zone 1 points 5 days ago

The BBC's Unnatural Histories presented evidence that the Amazon rainforest, rather than being a pristine wilderness, has been shaped by man for at least 11,000 years through practices such as forest gardening and terra preta.[20] Terra preta is found over large areas in the Amazon forest; and is now widely accepted as a product of indigenous soil management. The development of this fertile soil allowed agriculture and silviculture in the previously hostile environment; meaning that large portions of the Amazon rainforest are probably the result of centuries of human management, rather than naturally occurring as has previously been supposed.

https://en.wikipedia.org/wiki/Amazon_rainforest#History