Page 93 of this [0] source (cited in the article) appears to verify the topic of the article.
Certain Wikipedia authors finalize their articles in their sandbox and then copy it over, which was done in this case [1] with the sandbox including 180 edits and work over several weeks.
As introductory paragraphs are a summary of the article, they don't have to contain any citations [2], certain editors who only write long-form Wikipedia articles are fond of that style.
Entering "Koryos" in Google Scholar brings up more sources, no sources show up when using the diacritic.
Wikipedia is riddled with far more and far deeper types of errors, I do edit Wikipedia daily but am quite disillusioned with it. Even articles on major topics can include made-up paragraphs that no one notices for years, errors caused by an editor's misunderstanding of what the source is actually saying, and errors that slowly accumulate through various editors' well meaning copy-editing.
On a Mac, f.lux is not sufficiently strong, what has helped me a lot is to add a strong red color filter (System Preferences > Accessibility > Display > Color Filters > Filter Type: Color Tint, set to red, intensity to full). I do the same on my iPhone, it's quite comfortable during the night.
I also use the QuickShade app which makes the screen darker without reducing backligt brightness.
Note that the above link cannot be opened by clicking on it, the site redirects away request with a HackerNews referrer. Can still be opened by copying-and-pasting.
May not necessarily have much of an effect, as in this classic example where children who had recently received education on the use of fake sources were unable to spot that an article on the "tree octopus" was made up:
As usual, the university's public relations summary of the paper does not match the claims the paper makes. It makes grandiose claims of debunkings and is written from the point of view of whatever societal issue is popular today (identity and population movement).
I'm not seeing any claims there that are new. It is cool to have more data on spread of culture and genes, but we've already had most of that for decades.
Likely not due to the Scunthorpe problem like one might expect, but due to an arms dealer having sold weapons through a shell company named Tardigrade.
These kinds of fonts do not help dyslexics at all. Children in fact show a preference for reading in Arial and Times New Roman. Some research has shown that increased letter spacing results in fewer errors, but studies are not unanimous about this.