Ex-CIA Spy: China Is Preparing & We're Not Paying Attention! Here's What Happens If They Takeover!

In a previous video, we started thinking about strategies for dividing numbers where either the numbers or decimals or their quotients are going to be decimals. So now let’s continue that. We’re going to do slightly more involved examples. Let’s say we w…

There was one note that someone had that I thought was a little interesting. He pointed out that, Karl, thank you, that we haven’t really talked about taxes. I can’t imagine why we haven’t talked about taxes. Well, taxes are an interesting issue when you…

In other videos, when we talked about the various Chinese empires, we talked about the Song Dynasty in particular as a time of significant technological innovation. Here are just some of the examples that we talk about. Most notably, gunpowder, movable bl…

The terms mastery learning are used a lot these days, but I want to do a video on them because they can mean different things to different people. I want to talk about what it means, at least in a Khan Academy context. So to give us some perspective, let…

are ugly, one that he shared with all new style patients suddenly appearing all over the world. After making this connection, researchers found that all the patients who suddenly claimed to have ticks were also fans of Zimmerman. When MV confronted her d…

What will life be like in a early Mars colony? ROGER LAUNIUS: Let’s take some stages in terms of how we might do things on Mars. There is exploration, somebody going out and coming back. The next stage would be some sort of research station. We will most…