Streets aren't really mentioned either, besides "Rural highways". I assume other streets and parking spaces are mostly included in "Urban/Rural housing" and/or "Urban commercial" (smaller rural streets might not be counted seperately from the surrounding land).
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A similar recent article that I thought was interesting and contains many sources: https://www.vox.com/future-perfect/23778399/media-ignores-climate-change-beef-meat-dairy. It focuses a bit more on the role of media though. They also have this older article on big meat lobbying.
You can also install this userscript to automatically replace links to other instances to the local version on your main instance.
Emmerich is also just an old-fashioned German name. I would assume that the name Amerigo is derived from the name Emmerich, not the town Emmerich.
Like the other person said, probably not necessary, but I heard that account migration is one of many features that are planned. However, I would assume the immediate priority of the devs is making sure lemmy can handle the influx of reddit migrants and run smoothly with a high number of users, so it might be a while before features like that get implemented.
It seems you're misunderstanding the map. It's how much space each of those categories is taking up as a fraction of the total area of the contiguous US, not where that land use primarily occurs.