Safari Live - Day 129 | National Geographic

We’ve talked about things that might drive inequality, things that Thomas Piketty refers to as forces of divergence. But now, let’s think about, or at least some of what he cites as forces of convergence. So, forces of convergence are things that might ma…

Hi everyone, Salan here from Khan Academy. First of all, let me just thank you for either considering becoming part of the Learners Fund or especially if you are already a member, because the Learners Fund really is the backbone of our philanthropy here a…

Personality is more than just looks or manner of speech; it’s how you think, feel, and act that makes you unique. You have to do more than just read a few self-help books to develop a great character, but it is a great start. Personality lights you up in …

This video we’re going to try to get a sense of what the limit as x approaches 3 of ( x^3 - 3x^2 ) over ( 5x - 15 ) is. And when I say get a sense, we’re going to do that by seeing what values for this expression we get as x gets closer and closer to 3. N…

[Illustrator] Did you know that communication is actually one of the most important things in science? As we discover cool things, we need to be able to share them with others. And when we’re talking about data and measurements with other scientists, we n…

Some people think that Walt Disney invented the theme park, but that’s not really right. Is it? Um, there’s a tendency of Americans to think that we have kind of a patent on theme parks. The export of things like Disneyland or Universal Studios that are g…