Safari Live - Day 337 | National Geographic

Have you ever made ice cubes and then found that when you take them out of the freezer there are spikes on them? This phenomenon has caused a lot of curiosity and some concern. The truth is, there is a simple physical process responsible for ice cube spik…

What’s up you guys? It’s Graham here. So, how sad is this? 80% of New Year’s resolutions fail by the second week of February. And if you haven’t noticed, today is February 14th, the second week of February. Now, I know it’s also Valentine’s Day, but for t…

[Music] Another 20th century triumph of technology was quickly co-opted for sex. Weighing in at a ton or more, it became one of the all-time biggest fetish objects. “Gee, this is a beautiful car, Chevrolet 1956. Nice! The car industry should be my part…

Now we’re going to cover a really important circuit in electronics: it’s the resistor-capacitor circuit, or RC circuit. In particular, in this video, we’re going to talk about the natural response of an RC circuit. The natural response is what happens whe…

Hello and welcome to Ed Talks with Khan Academy! I am excited today to be talking to Phoenicia Hubbard, who is with NWEA, one of our partner organizations that we’ll talk more about in a minute. She is the Professional Learning Design Coordinator, so I’m …

Are you about to grab that with your mother? What the quick? Oh golly, what is this? Call the tailless whip. Let’s whip scorpion. Let me grab it with my hand. It’s fighting them. It’s fighting! Oh fighting! What is going on? Describe what you’re feeling.…