Safari Live - Day 129 | National Geographic

Now you’ve probably heard of the Leidenfrost effect. That’s when a volatile droplet like water levitates over a hot surface because it’s floating on a little cushion of its own vapor. Here I’m gonna try to create the inverse Leidenfrost effect where we le…

Hey, this is Kim from Khan Academy, and today I’m learning about Article 5 of the U.S. Constitution, which describes the Constitution’s amendment process. To learn more about Article 5, I talked to two experts: Professor Michael Rappaport, who is the Darl…

All right. So a lot of people aren’t going to agree with this list because honestly, they’re looking for excuses. But reality is, there are things you don’t really need in order to be successful. Even though it might seem that way. We know this from perso…

Hello grammarians! Hello Rosie! Hello David! We’re going to talk about dependent and independent clauses. Full disclosure, this is a relatively advanced part of grammar, but it is important to understand because mastering dependent and independent clauses…

I mean, we’ve all seen this new wave of artificial intelligence that’s taking over pretty much everything. It’s like a company can just throw the word AI into their marketing materials and everyone eats it up because AI is the future and it’s revolutionar…

As a teacher thinking about using a tool inside or outside of your classroom, the first natural question is: well, does that tool work? That’s also very important to us here at Khan Academy, with our mission. We don’t want just people to use it; we want t…