Safari Live - Day 368 | National Geographic

What we’re going to go over in this video is one of the core principles in calculus, and you’re going to use it any time you take the derivative of anything even reasonably complex. It’s called the chain rule. When you’re first exposed to it, it can seem …

[Music] [Applause] [Music] [Music] It was an outdoor walking park with descriptions of each president on sign boards. The park was spotless; very nice place for the family and stroll your little babies around in their strollers. Pretty neat. It wasn’t in…

What’s up, you guys? It’s Graham here. So over the weekend, I’ve received hundreds, if not thousands, of comments either mentioning or asking me to share my thoughts about Meet Kevin selling off his entire 20 million dollar portfolio with the expectation …

John tier claims to be a time traveler from the year 2036, and his time machine kind of looks like a certain DeLorean whose parts you can actually buy. Vauce Kevin here; this is Mind Blow: Time Travel Edition. This is a real time machine, sort of. Dr. Ron…

This over here is a picture of the Constitutional Convention, which we mentioned happened in 1787. The original intent of the Constitutional Convention was to revise the Articles of Confederation, but folks like Alexander Hamilton and James Madison really…

Many spiritual and religious traditions talk about the human tendency to spend too much time outside the present moment. According to a Harvard University study, we spend almost fifty percent of the time we are awake, not thinking about what we are doing.…