Safari Live - Day 337 | National Geographic

In this video, we’re going to start talking about exceptions to the octet rule, which we’ve talked about in many other videos. The octet rule is this notion that atoms tend to react in ways that they’re able to have a full outer shell; they’re able to hav…

We live in an age in which freedom of speech and saying what we want is seen as one of the most important tries of human being. But does that make rudeness a virtue? While I think that people should have freedom of speech and that unpopular opinions shou…

I was inspired to be an ocean explorer from a very young age. We had a swimming pool in my backyard, and I would put on a little mask and fins and pretend I was Jacques Cousteau or I was swimming with sharks or dolphins or something. I had somewhat of an …

Master Chief loves football, and the most confused face ever. It’s a special football episode of IMG North American football. It gives you everything a guy could want: kicks to the face, kicks to the nuts, and heads up your butt. You get to pick; you can …

So we’ve been given some information about these three triangles here, and then they say use one of the triangles. So use one of these three triangles to approximate the ratio. The ratio is the length of segment PN divided by the length of segment MN. S…

All right, hello everybody, and thank you all for taking time out of what’s got to be an incredibly busy day to join us for this webinar. My name is Karen White, and I’m on the product team here at Khan Academy. I’m also the mother of two girls, ages 12 a…