Safari Live - Day 42 | National Geographic

The human mind is an incredible thing that can conceive of the magnificence of the heavens and the intricacies of the basic components of matter. Yet for each mind to achieve its full potential, it needs a spark—the spark of enquiry and wonder. I don’t be…

Hey, this is Kim from Khan Academy, and today I’m learning about Article One of the U.S. Constitution. Article One is jam-packed with information about how our government is supposed to work. But principally, what it does is create the legislative branch …

Your job is to be an optimist. Your job is to believe amazing things about what you can do with your life and what you do in the world when you’re young. That’s the point. That’s the point. That’s why the world needs young people. [Music] This is Michae…

How did Ronald Reagan’s policies affect the government and economy? What Ronald Reagan believed is that good programs—he had been a New Deal Democrat—he believed that what had happened was good programs that had tried to help people who needed the help: …

What we’re going to do in this video is tackle some word problems involving ratios. So here we’re told that Yoda Soda is the intergalactic party drink that will have all of your friends saying, “Um, good this is.” You are throwing a party and you need fi…

Hey everyone! So, in the last video, I introduced this thing called the second partial derivative test. If you have some kind of multi-variable function, or really just a two-variable function, is what this applies to—something that’s f of X, Y—and it out…