Safari Live - Day 121 | National Geographic

The second law of thermodynamics tells us that everything in the universe tends towards disorder. And in complex systems, chaos is the norm. So you’d naturally expect the universe to be messy. And yet, we can observe occasions of spontaneous order: the sy…

The Gila monster is the most charismatic reptile we have in Arizona, for sure. We have seen temperatures increasing in the Tucson area. Gila monsters, you know, depend on humidity, and if humidity goes down lower earlier in the season, that could affect t…

There are several factors that can affect the rate of a reaction. One factor is the concentration of a reactant. Most chemical reactions proceed faster when the concentration of one of the reactants is increased. For example, let’s look at the reaction of…

[Applause] You know what’s been popular, Rod? What’s that? Our Slinky Drop video! That is popular, isn’t it? Yeah. Do you want to do another Slinky drop? That’s not a slinky. This is a slinky. That is an excellent slinky. We should drop that one…

What we’re going to do in this video is get some practice subtracting multi-digit numbers. I’m going to use 1000 minus 528 as our example, but it’s really to understand different methods and how they all fit together and why it actually makes sense. So, …

Colombia is one of the richest countries in terms of biodiversity, and we are also one of the most vulnerable countries in terms of climate change. That gives us a special responsibility, and we need to protect, as soon as possible, the largest amount of …