Safari Live - Day 368 | National Geographic

The ancient Taoist philosopher Zhuangzi once dreamt he was a butterfly. He felt free, flying from flower to flower, doing the things a butterfly does. He didn’t doubt he was a butterfly and had forgotten that he was Zhuangzi. When he woke up, he realized …

During my exchange year, I had a surgery, and here are the photos of that surgery. When it comes to exchange, there is something that most of the exchange students don’t tell you, so today I’m gonna spill all of the tea about student exchange. Hi guys, i…

We’re told that Juan runs 1.7 kilometers every morning. Juan runs the same amount every day for six days. How many kilometers did Juan run in six days? Pause this video and see if you can figure this out before we do this together. All right, so Juan is …

What’s up guys, it’s Graham here. So it’s official: as of May 26, the S&P 500 did something that very few people would have ever expected to happen a few months ago. It crossed above the very important psychological threshold of—wait for it—3,000. Tha…

So in the last video, I talked about vector fields in the context of two dimensions, and here I’d like to do the same but for three dimensions. A three-dimensional vector field is given by a certain multivariable function that has a three-dimensional inp…

What’s up you guys, it’s Graham here! So here’s something that’s probably all crossed our minds at some point or another: have you ever been faced with the dilemma of what happens when you win the one point six billion dollar jackpot lottery, and you sim…