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Nissan develops paint that keeps cars cool in summer heat
(www.asahi.com)
This is a most excellent place for technology news and articles.
So regardless of the website's name or origin, it could be an English language outlet targeted at the US audience. Which is quite common. Which is why I explicitly added this remark to the comment you initially replied.
So why are we back here? What exactly are you trying to prove? All I said that I'd expect a value to be expressed in Fahrenheit unless stated otherwise. I didn't say that you should do that, or that's somewhat objective. I was simply arguing that despite only ~4% of population using Fahrenheit, it has much more influence due to the listed factors.