Safari Live - Day 129 | National Geographic

A sociologist suspects that men are more likely to have received a ticket for speeding than women are. The sociologist wants to sample people and create a two-sample z interval. In other videos, we introduce what that idea is: to estimate the difference b…

There are no fixed environmental criteria for loneliness to occur. It can happen anywhere, even in social settings, family gatherings, and in the presence of a spouse. We can feel alone in large groups of people, but the experience of loneliness can be to…

In this video, we’re going to think about the market for apples. But the more important thing isn’t the apples; it’s to appreciate that the demand curves for a market are really the sum of the individual demand curves for every member of that market. Most…

So now I’m running, and I had no plan and no idea where I was heading. My heart was literally just pounding through my chest to the point where I think I’m actually gonna have a heart attack. I just kept repeating to myself in my head, I was like, “I just…

So today I am going to do everyone’s favorite non-Newtonian experiment. I am going to put this corn starch and water solution on this speaker, but I want to do this scientifically. So I am shooting it with a high-speed camera, and I am going to vary the …

At Oakland’s International Mail Center, Customs officers routinely scrutinize mail from many countries. Today, Customs Officer Naomi is taking a closer look at a package sent from Kenya. It’s declared as head lamps; this is the x-ray image of the package,…