Safari Live - Day 368 | National Geographic

[Music] Hey, it’s me D, and welcome back to Smarter Every Day! So you are probably well aware of the awesome science that comes out of space telescopes, but what you might not be aware of is the awesome science that goes into making these things work. Fo…

Hey, it’s me, Destin. Welcome back to Smarter Every Day! I used to wear glasses; I don’t know if you knew that about me, but I was a nearsighted guy until I got the surgery. This is what kept me from being a fighter pilot in the Air Force. I had the schol…

So we are asked to drag the point to 12.5 on the number line. So let’s see. You can see this is twelve, and then twelve point five is halfway between twelve and thirteen. Then they say, what is twelve point five rounded to the nearest tenth? Well, what’s…

Hi everyone, welcome to the Homeroom live stream. Sal here from Khan Academy. Super excited about the conversation we’re going to have today. But before we get started, I will give my standard announcements. First of all, a reminder that we are not for p…

In a previous video, we used this theorem to evaluate certain types of composite functions. In this video, we’ll do a few more examples that get a little bit more involved. So let’s say we wanted to figure out the limit as x approaches 0 of f of g of x. …

The Second Industrial Revolution in the United States assured in new technologies and new ways of living and working during the Gilded Age. Steel, electricity, and the telephone allowed railroads to crisscross the country, skyscrapers to rise out of citie…