And already mentioned by others but just to give it another thumbs up:
https://www.youtube.com/c/inanutshell Very nice animations explaining various topics from science, philosophy and politics. The only channel I literally seen all the videos. They sometimes make videos with fun ideas like what would happen if we nuked the moon a bit in the spirit of https://what-if.xkcd.com/ but most videos are on more serious subjects in a very easy to understand format.
And already mentioned by others but just to give it another thumbs up:
https://www.youtube.com/c/inanutshell Very nice animations explaining various topics from science, philosophy and politics. The only channel I literally seen all the videos. They sometimes make videos with fun ideas like what would happen if we nuked the moon a bit in the spirit of https://what-if.xkcd.com/ but most videos are on more serious subjects in a very easy to understand format.
https://www.youtube.com/c/PracticalEngineeringChannel mostly covers civil engineering. How we handle sewage in big cities, how roads are built, how power grid works and many more.
https://www.youtube.com/c/EconomicsExplained As the name suggests, explains economics. Makes videos per country about their economy and created his own ranking of countries.
These are my top just to keep it short :)