Safari Live - Day 368 | National Geographic

Let’s talk a little bit about crystalline and amorphous polymers. Now, in previous videos we talked about crystalline versus amorphous solids. Crystalline solids have a very regular pattern; maybe they look something like this if you imagine the particle…

So we have a circle here, and let’s say that we know that its circumference is equal to 6 Pi. I’ll write it units, whatever our units happen to be. Let’s see if we can figure out, given that its circumference is 6 Pi of these units, what is the area going…

Derek: A couple of years ago my friend Destin and I wanted to definitively answer the question: does water actually swirl the opposite direction down the drain in the other hemisphere? At the time, I was living in Sydney, Australia, and Destin was in Hunt…

When we last left off in the riveting saga of quadratic approximations of multivariable functions, we were approximating a two-variable function f of x, y, and we ended up with this pretty monstrous expression. Because it’s written in its full abstract fo…

In the 1950s, the US began the top secret project Sundial; most of it is still classified. The goal: a single nuclear bomb so powerful it would destroy all of human civilization. Conceived in cold logic from the mind of a genius scientist, Sundial had the…

[Narrator] Gordon Ramsay is heading to Kwazulu-Natal, South Africa, to learn the secrets of Zulu cuisine. But how the region developed some of its signature dishes reveals a deeper and darker history. In just one stroll through a spice market in Durban, S…