Safari Live - Day 42 | National Geographic

This Pine is the Central Bank and Trust of the acorn woodpecker, and every inch is studded with neatly arranged holes—the woodpecker’s safe deposit boxes. Finding the absolutely perfect little vault for every acorn can be quite the puzzle. Each hole has b…

We have taken fish out of the ocean faster than they can reproduce. Ninety percent of the large fish, like the tuna and the sharks, are gone. And we killed them in the last 100 years alone. Right now about a third of the fisheries of the world have collap…

In the last video, I talked about how if you’re trying to maximize or minimize a multivariable function, you can imagine its graph. In this case, this is just a two-variable function, and we’re looking at its graph. You want to find the spots where the ta…

It could be terrible and it could be great. It’s not clear. Right? But one thing is for sure, we will not control it. Go is arguably the most complex board game in existence. Its goal is simple: surround more territory than your opponent. This game has b…

[Instructor] Life on Earth has existed for billions of years. Humans know this, not because we’ve been around the whole time, but instead, thanks to the discovery of fossils, which tell us about organisms that lived in the distant past. Scientists have fo…

Let’s now take some limits involving composite functions. So over here we have the limit of G of H of x as x approaches three. And like always, I encourage you to pause the video and see if you can figure this out on your own. Well, we can leverage our l…