The comedians, gamers, and controversy-stirrers of YouTube may grab all the headlines, but the slow and steady stars of the video service are the reliable non-fiction channels that produce explainer videos of all sorts for the betterment of the internet. These are not the ubiquitous hosts waving into the camera and saying "Hey YouTubers!" before giving you their rant. These are well-researched, polished, entertaining educational videos on every topic imaginable, and if you like getting smarter while you relax, you should follow them all.

1. Kurzgesagt – In a Nutshell