Mark Zuckerberg on Taking Risks and Finding Talented People

What would happen if we detonated humanity’s most powerful nuclear weapon at the deepest point of the ocean? For sure, tsunamis hundreds of meters high would destroy coastal cities, earthquakes would level countries, new volcanoes would bring us nuclear w…

Last year, the team at Astranis launched their first commercial satellite into space. Stage separation confirmed. [Music] [Applause] Their smaller, low-cost telecom satellites represent a major breakthrough for the aerospace industry, and they’re also the…

We already know that in an electrolytic cell, current or movement of electrons is used to drive a redox reaction. If we look at a generic reduction half-reaction, the stoichiometry of the half-reaction shows how many electrons are needed to reduce a gener…

In almost all cases, you only ever have one theory on offer. In the case of gravity, there literally is only one theory on offer at the moment: there’s general relativity. Previously, we did have two theories; we had Newtonian gravity, and we had general …

Hello teachers, I’m Sal Khan, founder of the not-for-profit Khan Academy, with the goal of helping you accelerate outcomes in your classroom. I have an exciting announcement: what we are launching is a new mastery framework on Khan Academy. We have some …

So we’re told let ( F(x) = \frac{2x^2 - 18}{G(x)} ), where ( G(x) ) is a polynomial. Then they tell us which of the following is a possible graph of ( y = F(x) ). They give us four choices here, and like always, I encourage you to pause the video and see …