Safari Live - Day 337 | National Geographic

What we want to do in this video is get an understanding of how we can approximate the area under a curve. For the sake of an example, we’ll use the curve ( y = x^2 + 1 ). Let’s think about the area under this curve above the x-axis from ( x = -1 ) to ( …

Today, let’s talk about energy resources. You’ve probably already done something today that used energy resources, even beginning from the moment you woke up. For me, the beginning of my day always starts with making tea. I use energy in every step of thi…

We’ve already made several videos over evolution. Just to remind ourselves what evolution is talking about: it’s the change in heritable traits of a population over generations. A lot of times, you’ll hear people say “evolution” and “natural selection” re…

[Instructor] In 1890, the United States was not exactly a major player on the world stage. It was an industrial behemoth, attracting immigrants from all over the world, but it was focused on its own internal growth, not foreign affairs. There was little i…

A buffer solution consists of a significant amount of a weak acid and its conjugate base. Let’s say we have a generic weak acid HA and its conjugate base A⁻. We’re going to use some particulate diagrams to try to understand how buffers work. So for our f…

What’s up you guys, it’s Graham here. So, over the last few months, a lot has changed in the investment world. Interest rates have plunged to zero, trillions of dollars have been printed into our economy to help lift it back to life, toilet paper is now t…