this post was submitted on 27 Mar 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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If you are aged 30 or more, then 50% of all human fossil fuel emissions happened during your lifetime. (by Neil Kaye)

Source: https://bsky.app/profile/infobeautiful.bsky.social/post/3kopcy5lddn2e

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[–] CarbonatedPastaSauce 22 points 10 months ago

That’s sobering. Humans are well and truly fucked unless governments get off their asses and put serious money into solving this.

[–] [email protected] 12 points 10 months ago (1 children)

The graph highlights major percentiles, such as 75%.

The one that struck me though was the value for age 60, because that’s clearly when the graph starts to flatten out, which means it’s when things started to really grow.

And, as one would expect, it lines up pretty perfectly with the young end of the boomer generation. That is, those born ~1960 and earlier have overseen 80-90% of all global emissions.

And if you’re an early boomer ~1945-1950, then ~80% has happened since you’ve been able to vote.

[–] NegativeInf 5 points 10 months ago

And these people also had the most exposure to airborne lead from leaded gasoline. So no wonder we have such limited intellectual capabilities.

[–] [email protected] -3 points 10 months ago (2 children)

People were using other fuels before they start using fossil fuels. Like wood. It is double whammy - more CO2 (less efficient burning) and no CO2 recapturing by those burned trees.

[–] Chainweasel 6 points 10 months ago (1 children)

Wood is more or less carbon neutral though, the carbon that is released by wood burning is the same carbon that the tree pulled out of the atmosphere to build the wood in the first place. The only extra emissions come from how the wood was gathered and prepared, so if they weren't using diesel trucks to haul the wood and they weren't using chainsaws to cut the trees down then yes, it would be carbon neutral.

[–] LwL 3 points 10 months ago* (last edited 10 months ago)

If the result is deforestation it's not really carbon neutral, that would require another tree to grow in its place. Otherwise oil would be carbon neutral too, since that once came from plants.

The main difference is the sheer amount of energy we use honestly, if we covered all our current needs with wood we'd probably run out of trees faster than they could ever regrow. In that sense coal isn't strictly worse, if we stayed on 17th century level energy consumptiom but used coal instead of wood, we wouldn't have to worry about global warming either.

[–] sep 4 points 10 months ago (1 children)

But a tree grows quickly, say 50 years. compared to how fast oil is produced by dead organic matter underground. Is not the burn wood-> grow a tree -> burn wood a much shorter and more sustainable co2 cycle?
Wood burning do have a problem with local polution do.

[–] [email protected] 0 points 10 months ago

There are plenty examples of total destructions of forests in the beginning of industrial revolution in Europe. So, no, a tree does not grow.