Safari Live - Day 121 | National Geographic

(light music) - [Marielena] Yellowstone is epic, strange, and iconic. It is well-deserving of its protected status. But how did it come to be the world’s first National Park? (light music) Archeologists have found evidence of human activity in Yellowstone…

I just want to turn my startup into like a real-time strategy game where I can sit at my computer and click on things and watch numbers go up. If I can do that and just sit on the couch and have people bring me food while I click things, we’re in good sha…

What we have here are a few data analysis questions in a biology context from the New York Regents exam. But these are useful example problems if you’re studying high school biology in general because they might show up in some type of an exam that your t…

Hi everyone, Sal Khan here from Khan Academy. Welcome to our daily homeroom live stream, which is really just a way of having interesting conversations and staying connected during this time of school closures and social distancing. Before we get into wh…

After being trapped on the Bering Land Bridge for several thousand years, our ancestors headed south in search of warmer climates and better food sources. Once people made it across the land bridge, it was like the floodgates opened up. Kent and I are spl…

[music playing] The roots of war lie buried deep in the human past. It has been a part of us since before recorded history. At the dawn of civilization, our ties to the land drove us to protect what was ours. We began to raise our children not as hunters …