Safari Live - Day 337 | National Geographic

(Dramatic orchestral music) - Imagine you’re out in Africa. It’s night-time, you’re sleeping in the back of an open vehicle, and it’s so hot that you have no clothes on and you’re still sweating. All you can hear is the distant call of a hyena and an impa…

[Instructor] Here are some equations that are often used in pH calculations. For example, let’s say a solution is formed at 25 degrees Celsius and the solution has a pOH of 4.75, and our goal is to calculate the concentration of hydronium ions in solution…

I’d like to continue our work together. So why don’t you come to Prague with me, Jakob? Maybe I could get you a position at the University. We’d have time to work on accelerated motion. Albert, I am flattered. But I’ve received another offer. A [inaudi…

So let’s think about all of the costs that are involved in buying the car. The first and most obvious one is the cost of the car itself. Now, it’s really important to think about what the actual cost of the car is, because you might say, “Okay, there’s Ca…

In and out, in and out, staying alive is about doing things this very second. Your cells are combusting glucose molecules with oxygen to make energy available, which keeps you alive for another precious moment. To get the oxygen to your cells, you’re brea…

It is the year 1200, and the world is about to change in dramatic fashion. Let’s just give ourselves a little bit of context of what the world looks like. The kings of Western Europe are caught up in the Crusades. In the year 1200, the Third Crusade has j…