Safari Live - Day 368 | National Geographic

So here I’d like to talk about what the gradient means in the context of the graph of a function. In the last video, I defined the gradient, um, but let me just take a function here. The one that I have graphed is (x^2 + y^2) (f of xy = (x^2 + y^2)). So,…

What’s up guys, it’s Graham here. So, throughout my entire life, I’ve always been an excessive saver. No matter how much money I make, I always set a strict budget to follow. I calculate the bare minimum that I need, and then everything else above that is…

[Music] [Music] One question that people ask me is, how do I apply creativity to the presentations that I give? My secret sauce is to come up with a visual image that anybody—I don’t care if you’re an adult, whether you’re a fifth grader or second grader…

After a rough voyage, we’ve arrived at the end of the Tracy Arm Fjord to search for glacial ice. “Oh my God, it’s a jelly! Gorgeous, it’s beautiful!” So we’re looking for what size. “So what we want to look for is something that’s very rounded, right? U…

Mechanisms of evolution. What is evolution? Evolution is the development of life on Earth. This is a process that began billions of years ago and is still continuing to this day. Evolution tells us how it was possible for the enormous diversity of life t…

What we’re going to do in this video is think about the significant empires that formed shortly before the European colonization of the Americas. In particular, we’re going to focus on the Inca Empire. In other videos, we have talked about the Aztecs, but…