Safari Live - Day 121 | National Geographic

Every spring, my mom used to plant boxes of violets and propagate the geranium she’s been growing for years in a small garden on a balcony in Tehran. I remember her telling me, “When you move a plant from one place to another, you need to give it some tim…

One of the common mistakes about reading is that aiming too much or focusing on numbers too much. I know reading tons and tons of books might feel amazing about yourself and even maybe feed your ego a little bit. But in those scenarios, you need to rememb…

We are told that a van drives around a circular curve of radius r with linear speed v. On a second curve of the same radius, the van has linear speed one third v. You could view linear speed as the magnitude of your linear velocity. How does the magnitud…

What I want to do in this video is a few examples that test our intuition of the derivative as a rate of change or the steepness of a curve, or the slope of a curve, or the slope of a tangent line of a curve, depending on how you actually want to think ab…

All right, guys! Well, welcome back to the [Music] channel. We’re in DC right now. We just had dinner, and now we’re at the hotel. My friends are actually here. We got an tell girl, Emma, and we also have a new guest. We have Riley. Today has been so far …

Can you explain how a sewing machine works? I mean, think about it. We’ve all seen them. There’s that little needle that’s moving up and down really fast, leaving a trail of stitches behind them. But if you think about it for a second, how are they doing …