this post was submitted on 16 Apr 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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Beef produces 85 kg CO2e per kg of food. Tofu produces 2.9 kg CO2e per kg of food. (ourworldindata.org)
submitted 4 months ago by [email protected] to c/[email protected]
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[โ€“] [email protected] 3 points 4 months ago* (last edited 4 months ago) (1 children)

That would also be a very nice comparison and honestly probably a better one given how different food have very different calorie densities.

Now I'm really curious about calorie density of the various categories listed in the chart, I'm probably going to have to do some napkin math to get a small ball park.

I know I won't be anywhere close to the actual figure but I may be close enough to satisfy my curiosity.

Edit: Thinking about it a bit though brings to mind that the calculations there would be incredibly difficult and would likely require a lot of averages.

[โ€“] [email protected] 3 points 4 months ago

You should probably take into account beneficial and harmful effects of each food type as well (including externalities such as healthcare costs), although that would be an even more difficult task.