Safari Live - Day 121 | National Geographic

Hi, this is Kim from Khan Academy. Today we’re learning more about the landmark Supreme Court case Dred Scott versus Sanford, decided in 1857. The ruling in the Dred Scott case inflamed sectional tensions over slavery, which had been growing ever more hea…

Where is the darkest part of a shadow? I mean, the obvious answer seems to be right in the middle. If you look closely at a shadow, as you move the object away from the wall, you notice that the shadow gets a bit fuzzy. So clearly, the edges are lighter. …

Someday, I will die. But should I? If I was offered a longer life, I would take that in a second. But how long is too long? Is death something I should deny forever, or is death and the role it plays in the universe something I am better off accepting? I …

Hi! I’m Ashley Kalina, and I’m here in beautiful Napa Valley to talk to you about National Get Outdoors Day. I’m here with National Geographic and our friends at Nature Valley. We’re here to experience the beautiful outdoors. Now, I’m not the expert here…

Miyamoto Musashi, one of the greatest samurai to have ever lived, believed that protecting our honour was more important than protecting our lives. In his Dokkodo, a collection of 21 principles for living a good life that he dedicated to one of his discip…

So we have a nice little equation here that has some rational expressions in it. And like always, pause the video and see if you can figure out which X’s satisfy this equation. Alright, let’s work through it together. Now, when I see things in the denomi…