this post was submitted on 21 Nov 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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'A harbinger of what's to come:' NASA satellites show massive drop in global freshwater levels (www.livescience.com)
submitted 1 day ago by [email protected] to c/[email protected]
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Global fresh water demand will outstrip supply by 40% by 2030

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[–] [email protected] 13 points 1 day ago (3 children)

There are over 8 billion people on earth. People drink, wash, and shit in multiple litres of water daily. Crops require water. Livestock requires water. We slaughter several Trillion (with a T) livestock globally each year, there is A LOT of livestock. Industry requires water. Industry is trusted not to hoard, pollute or waste water. Water processing and sewage reclamation requires well funded public infrastructure. The hotter our atmosphere is, the more water vapour it will hold.

Just some ideas to get you started.

[–] [email protected] 2 points 6 hours ago

While I agree that water use for livestock it’s a problem. There aren’t anywhere near a trillion livestock to kill. Over dozens of years, maybe, barely, and a vast vast majority of them are going to be chickens.

In 2014 there were 21 billion chickens. A Trillion is 1000 billion. There were less than 1.5 billion cattle and just over a billion sheep the same year and those numbers don’t appear to change drastically. Pork production is down this year for example.

[–] [email protected] 6 points 1 day ago

I always assumed that it was a matter of a lack of infrastructure to do water processing and reclamation, and or just it takes time for water to cycle back around to being fresh water. I never thought about how a shift in climate means the air holds on to more water.

Goes to show, despite it being bad news, you really do learn something new everyday.