Safari Live - Day 42 | National Geographic

You have the right to vote music or lose it. Rock the Vote comes along at the same time MTV’s fledgling news department is finding its legs. Hi, I’m Kevin de Sauron and this is MTV News. The second of three presidential debates was held Thursday night; i…

So continuing on with where we were in the last video, um, we’re looking for this unit tangent vector function given the parameterization. So the specific example that I have is a function that parameterizes a circle with radius capital R, but I also kin…

In a previous video, we started thinking about things like population growth rate and how it relates to the birth rate and the death rate within a population. We related that to some of the seemingly complex formulas that you might see on an AP Biology fo…

So I’m going to write down a number, and I’m going to think about how much do each of these digits of the number—what value do they represent? And actually, let me pick on this 2 here. What does that 2 represent? Does it just represent two, or does it rep…

[Narrator] Acid rain sounds like something straight out of a sci-fi film, like strange raindrops that fall in a city and corrode everything. The truth is not far off, but the good news is that we know a lot about what causes acid rain and how to address i…

The crisis of credit visualized. What is the credit crisis? It’s a worldwide financial fiasco involving terms you’ve probably heard, like subprime mortgages, collateralized debt obligations, frozen credit markets, and credit default swaps. Who’s affected?…