Safari Live - Day 42 | National Geographic

We’re told Divya is seated on a Ferris wheel at time T equals zero. The graph below shows her height H in meters T seconds after the ride starts. So at time equals zero, she looks like about two. What is this? This would be one and a half, so it looks lik…

The sun is yellow, or is it? You’re used to seeing a happy yellow circle floating in a blue sky, but that’s fake news. If you placed a prism in a sunbeam in space, you’d see that the sun radiates light in every color of the visible spectrum. If these colo…

So we have ( H(x) ) is equal to ( 5x^{1⁄4} + 7 ) and we want to find what is ( H’ ) of 16, or what is the derivative of this function when ( x ) is equal to 16. And like always, pause this video and see if you can figure it out on your own. All right, w…

The Maya, they’re considered one of the most advanced civilizations to have existed in the Americas before the Spanish conquest. But who exactly were the ancient Maya people, and what led to the collapse of their civilization? As early as 1800 BC, the Ma…

I am sorry. Those were the words uttered by AAR Rasin, the creator of the infinite scroll, after realizing his invention destroyed billions of people around the world. This one simple feature turned us into addicts. Is it too late for us to stop doom scro…

We are told that a race car driver has 28 cars. Each car has four tires. He has to replace all the tires on the cars. He has 22 tires right now. Estimate the total number of tires he needs to buy. So pause this video and see if you can do that. And the ke…