Mark Zuckerberg on Taking Risks and Finding Talented People

In this video, we’re going to think about marginal revenue and marginal cost for a firm in an imperfectly competitive market. But before we do that, I just want to be able to review and compare to what we already know about a firm in a perfectly competiti…

Tai Lopez ads are some of the most effectively crafted ads I have ever seen. To make a video like this, I watched every single Tai Lopez ad I could from beginning to end just so I could better understand the fundamentals of what was really going on from a…

Let’s try to evaluate 7 and 6 9ths - 3 and 25ths. So, like always, I like to separate out the whole number parts from the fractional parts. This is the same thing as 7 + 6⁄9 - 3 - 25⁄100. The reason why I’m saying -3 and -25⁄100 is this is the same thing…

Hi everyone! Sal Khan here and welcome to Middle School Physics. I have Iman Howard who manages all of our STEM content. Iman, why should folks be excited about Middle School Physics? So, Middle School Physics is like the only science out there that exp…

[Illustrator] Did you know that communication is actually one of the most important things in science? As we discover cool things, we need to be able to share them with others. And when we’re talking about data and measurements with other scientists, we n…

As far as we can observe, being ‘alive’ means that, for a limited amount of time, we’re beings in a mysterious universe, doing whatever we do, seeing, hearing, smelling, touching, tasting, until we die. Animals and plants seem perfectly content with this …