Safari Live - Day 368 | National Geographic

Where we left off in the last video, we saw Muhammad being born into a tribal Arabia. He’s born into a powerful tribe, the Quraish, who are in control of Mecca. But his early life is difficult. His mother dies when he’s six; his grandfather, who’s taken c…

I kind of joke with folks that January is the longest day of my year. The sunlight down there is incredible because you get to see animals, uh, go about sort of what they do in perpetual sunlight in 24 hours. Generally, if you have nighttime, if we’ve got…

Hello and welcome to ED Talks with Khan Academy where we talk to influential people in the field of education. I am excited today to talk with Dr. Dan Willingham. Before we get started with that, I want to remind all of you that Khan Academy is a non-prof…

Hey, Mr. Wonderful here, but I’m in the kitchen, so we don’t need Mr. Wonderful; we need Chef Wonderful. How are we gonna get them? Eg, well, um, but there’s no Chef Wonderful. You know what? I want to talk about Mother’s Day. It’s coming up, and this ye…

The figure above shows the graph of f prime, the derivative of a twice differentiable function f on the interval. It’s a closed interval from negative three to four. The graph of f prime has horizontal tangents at x equals negative one, x equals one, and …

How do you know when you meet your perfect partner that you think is going to be with you for life? Maybe you get married, maybe you don’t. But my point is, why are they the right one for you? You have to think long term. Are they your partner because th…