Safari Live - Day 368 | National Geographic

Today I’m at the University of Sydney with Dr. Phil, and we’re talking about the pressure that all of us are under. You are under a lot of pressure, probably 10,000 kg. 10,000 kg is pressing in on my whole body, all from all sides. Where does all this pre…

[Narrator] Art, philosophy, democracy, and heroes. These are just a few achievements of the legendary civilization known as ancient Greece. Ancient Greece was born on the shores of the Aegean Sea about 4,000 years ago. In over a millennium, it expanded to…

We know that when we’re just multiplying regular numbers, we have the notion of a reciprocal. For example, if I were to take 2 and I were to multiply it by its reciprocal, it would be equal to 1. Or if I were to just take a, and a is not equal to 0, and I…

Hi everyone, Sal Khan here. Welcome to the Homeroom live stream! We have a very exciting guest today: Anant Agarwal, founder and CEO of edX. Sorry, I’m messing with my video settings probably at the exact wrong moment, but before I get into that, I will g…

What’s up you guys? It’s Graham here. So today we’re gonna be combining my two favorite topics in the entire planet. That would be Millennials and credit cards. Some might say that’s a little like combining oil and water, or for people who can’t properly …

We’re told to use the interactive graph below to sketch a graph of ( y = -2 \cdot 3^x + 5 ). And so this is clearly an exponential function right over here. Let’s think about the behavior as ( x ) changes. When ( x ) is very negative or when ( x ) is ver…