Safari Live - Day 337 | National Geographic

In this video, we’re going to think about constructing Lewis diagrams, which you’ve probably seen before. They’re nice ways of visualizing how the atoms in a molecule are bonded to each other and what other lone pairs of valence electrons various atoms mi…

Hello Internet. We need to talk about locks: the physical and the digital. In the physical world, locks aren’t as good as you think they are. The lock on your door stops worries, not burglars, as two minutes of searching will reveal. Spend more, get more…

So we’re told that Amanda Young wants to win some prizes. A cereal company is giving away a prize in each box of cereal, and they advertise: collect all six prizes. Each box of cereal has one prize, and each prize is equally likely to appear in any given …

Let’s see. We have two samples of helium gas. One sample of helium gas is at temperature t1, and the other sample of helium gas is at temperature t2. If t2 is greater than t1, that means, on average, the particles of helium gas in the second box are movin…

Close your eyes. Remember yourself as a child, playing with your friends, stressing out about spelling tests at school, coming home to snacks on the table, and asking for help with your homework. What do you feel? Maybe you’re suspended in a time when thi…

In other videos, we have already talked about the idea of GDP in some depth—gross domestic product, a measure of the aggregate goods and services produced in a country in a year. But what we’re going to discuss in this video is how good a measure GDP is, …