this post was submitted on 12 Oct 2023
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Risa

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Star Trek memes and shitposts

Come on'n get your jamaharon on! There are no real rules—just don't break the weather control network.

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A little short for a starship, isn't he?

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[–] [email protected] 4 points 1 year ago (2 children)

What kind of emissions are we producing to build the ships?

[–] [email protected] 1 points 1 year ago

How long are the cargo ships gonna be in service compared to that smartphone of an electric car?

[–] [email protected] 1 points 1 year ago (1 children)

Most of its steel and other metals, so assuming that theyre using electrically pwered smelters most of the emmissions would be in transport and mining equiptment. So probably somewhat comparable, depends on how much rail was used or if it was transportes exclusively via semi.

[–] [email protected] 3 points 1 year ago (2 children)

Most steel is (unfortunately) made in Chinese blast furnaces using coal coke and powered with electricity from coal power plants.

[–] [email protected] 2 points 1 year ago

Im aware, I was giving a best possible circumstances type situation. Still the steel for both is probably sourced from the same factory.

[–] [email protected] 1 points 1 year ago (1 children)

And all steel is made using coal regardless of where it's produced, except in experimental processes like HYBRIT.

https://www.theguardian.com/science/2021/aug/19/green-steel-swedish-company-ships-first-batch-made-without-using-coal

[–] [email protected] 1 points 1 year ago

Some producers use electric arc furnaces, a few of which use only scrap metal as input, which means they need far less coal and emit far less CO2 than a conventional BOF/BFF setup.