this post was submitted on 01 May 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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Corn to Power Airplanes? Biden Administration Sets a High Bar (www.nytimes.com)
submitted 6 months ago by silence7 to c/climate
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[–] Aphelion@lemm.ee 10 points 6 months ago* (last edited 6 months ago) (1 children)

Corn to ethanol is already energy negative, why are we going deeper into this fallacy?

[–] girsaysdoom@sh.itjust.works 8 points 6 months ago* (last edited 6 months ago) (1 children)

I wonder if it's some sort of rationale for keeping the corn subsidies while also framing it a a greener alternative to crude oil extraction.

Edit: After actually reading the article, yes this is the case. Apparently their proposed methods emit roughly 50% less emissions, which I think might be worth it depending on how much is expended to grow the corn and process the fuel. You could be right in the end though but if there are less emissions in general, it might be worth it.

[–] fuckingkangaroos@lemm.ee 2 points 6 months ago

An actual renewable fuel instead of fossil fuels

[–] MtnPoo@beehaw.org 3 points 6 months ago (2 children)

So we're going to give food to planes instead of hungry people. does this guy know it's an election year?

[–] silence7 13 points 6 months ago (1 children)

We're actually giving about half the US corn crop to cars already. The other half goes to animals, with a rounding error going to people.

I also recommend reading the article: the policy makes it difficult to get a subsidy to convert corn into jet-a fuel

[–] MtnPoo@beehaw.org 1 points 6 months ago

I saw the part about it being hard to get the subsidy. Sounds like it's happening anyway.

[–] Ooops@kbin.social 7 points 6 months ago

Actually we give corn to animals you can then later eat. If we actually start eating what we instead inefficently feed into animal farming, we could feed twice as many people as exist and still have left overs for creating fuels.

[–] grue@lemmy.world 2 points 6 months ago (1 children)

Can we finally get rid of the leaded aviation gasoline while we're at it?

[–] fuckingkangaroos@lemm.ee 1 points 6 months ago

Still boggles my mind people are flying around recreationally pumping thousands of tons of heavy metal pollution into the air.