Safari Live - Day 129 | National Geographic

On the 5th of February 1958, a Mark 15 thermonuclear bomb was loaded onto a B-47 aircraft stationed at Homestead Air Force Base in Southern Florida. The plane was to take part in an extended training mission meant to simulate an attack on the Soviet Union…

Richard Davidson: There are very simple ways of cultivating positive outlook. When you do those simple kinds of practices we’ve shown that both behavior and the brain changes and it doesn’t take much. (Applause) There are four constituents of well-being t…

We’re told corn is used as food and as an input in the production of ethanol and alternative fuel. Assume corn is produced in a perfectly competitive market. Draw correctly labeled side-by-side graphs for the corn market and a representative corn farmer o…

So this is going to be a serious video for two reasons. Number one, it’s my birthday today! I’m 32 years old, and my only birthday wish is that you just hit the like button for the YouTube algorithm. And second, I want to address something that I have av…

Now we’re ready to start hooking up our components into circuits, and one of the two things that are going to be very useful to us are Kof’s laws. In this video, we’re going to talk about Kof’s voltage law. If we look at this circuit here, this is a volt…

Let’s say we run an experiment to determine if a reaction is endo or exothermic. For our hypothetical reaction, A reacts with B to form C, and let’s say this reaction takes place in aqueous solution in a beaker. We can define our system as the reactants a…