Safari Live - Day 42 | National Geographic

(Slow guitar music) In Peru, it is very common that archaeological sites are surrounded by local communities, villages, towns, where people live usually in the most traditional ways. Pachacamac is a huge archaeological site south of Lima. Around it, we ha…

Let’s talk about waves. So, let’s imagine that you were to take a string and attach it at one end to a wall, and then on the other end, you were to wiggle it up and down. Well, then you would have made a wave. You would see a pattern that looks like this.…

Plastics are being used to such an extent throughout the world that we may well ask what was used before its discovery. Before 1950, plastic was barely a part of American life. So how did our culture become so plastic? Modern plastic didn’t really get it…

We’re given two different complex numbers here and we want to figure out what is the product. Pause this video and see if you can figure that out. All right, now let’s work on this together. So we know from the form that it’s written here that the modulu…

Natural selection only cares about what’s adaptive. Both true and false beliefs can be adaptive as long as they increase an animal’s chance of survival. Why should we expect natural selection to favor true adaptive beliefs over false ones? Alvin Plantinga…

Miscommunication is a daily occurrence. Oftentimes, we aren’t doing a very good job when it comes to interpreting what people say or understanding the reasons why they say it. A common mistake is creating a story around a specific situation, which revolve…