Safari Live - Day 337 | National Geographic

When we start to study electricity, we need to get an idea of what is current and what is voltage. In two earlier videos, I talked about the idea of current and voltage, current and voltage, and what they meant. When we talked about current, it’s easiest …

The year is 452. The Roman Empire is on the brink of collapse, and the Huns have just launched their attack on Northern Italy. Several cities are completely destroyed, forcing the locals to go on the run. They head for a lagoon just off the coast and take…

Recently, there’s been a lot of excitement about this mysterious star and the K2 data from the Kepler space telescope. This star has a bizarre dip in the amount of light that reaches Earth. There is a chance that maybe the dip in the light is caused by an…

So, I wondered what’s motivated you? Cuz you push in so many directions simultaneously. You have to be really highly motivated to do that. And so, you figured out that the question, in a sense, was the answer. Yeah, the question—or I said another way—tha…

You can view this diagram as an org chart of the government of the United States. What we have highlighted in this blue-green color is the executive branch and the things that fall under the executive branch. You can’t even see everything; a lot of it fal…

Okay, I just learned the greatest life hack. If you see something that you want to take a picture of, but you left your phone at home, don’t worry. Just do this: blindfold yourself for like 30 minutes, and then stare at what you want to take a picture of …