Mark Zuckerberg on Taking Risks and Finding Talented People

Truth is very fought over. When we say truth, the biggest problem we’re going to run into is that what society wants for you is not what’s always good for you. Society is the largest group, and groups search for consensus; individuals search for truth. It…

Narrator: The world you see is not real – you’re not living in this very moment that you are experiencing and nothing is like it seems. It turns out your brain constructs your reality as you are experiencing it, it edits your memories as they happen, it l…

Let’s talk about double pain. If your body was 620 mil long, pain could be your alarm clock. You could bite your toe at bedtime and then go to sleep; you wouldn’t feel any pain until the signal from your toe reached your brain and woke you up 8 hours late…

Hi everyone, Sal Khan here, and I’m excited to announce that Khan Migo, our generative AI-powered tutor on Khan Academy, is now generally available! This is especially powerful as we go into back to school. If you have Khan Migo, your student has it on th…

We’re told the graph of y equals 2 to the x is shown below. So that’s the graph; it’s an exponential function. Which of the following is the graph of y is equal to negative 1 times 2 to the x plus 3 plus 4? They give us 4 choices down here, and before we …

In chemistry, we’re going to see situations where a molecule, an entire molecule itself, might be neutral. But because of the differences in electronegativities and how the molecules are structured, you might have a partially positive charge on one side a…