Ask HN: YouTube channels like Hacker News you recommend, about tech and science?

Disclaimer: I know some people don't like this kind of survey but this is not about "HN alternatives". I recently ditched my cable TV subscription and now I only use youtube.com/tv instead, hence this Ask HN.

Question: what YouTube channels do you people recommend to watch?

It must have frequent updates (weekly, at least) and discuss technology topics or science news or anything in between. Basically any channels like HN but done in video. Bonus points for non-english channels too, as we have a broad audience here :-)