A solid channel for people who have an interest in history. Decent technical quality, and he keeps most of the topics interesting.

This one is especially recommended for people who love to spend idle moments looking at maps.

I’m recommending more to call attention to the Real Stories documentary channel in general than this particular episode. It wasn’t bad, but if you like docs you’ll find other episodes you like here too.

If a video actually gets me (of all people!) interested in the sociological patterns of animals that’s a sign it’s a good video.

You really can make stuff with used plastic milk jugs, and it’s not hard. Just cut them open so you can clean them thoroughly inside and out (or else you will get burnt brown spots) and heat them up to 350 deg F. I don’t encourage experimenting with any other plastics unless you really know what you are doing because they can emit poisonous fumes when heated, but if you see the number 2 in a triangle (like in the screenshot) and stick to 350 degrees then you’re probably OK.

My wife and I actually attended a David McCullough lecture once. We don’t live in a big town; I went there expecting to see a few hundred people in attendance. It was more like a couple thousand. I had read some of his books but had no idea what a rock star he was.

Not exactly YouTube’s biggest secret, and not even a YouTube exclusive, but Ted Talks are one of the Internet’s oldest continuing sources of mini-lectures on a wide range of scientific and social topics.