So this recording is going to go through how we can use a type of web map called the Geography Visualiser to look at where people live around the world. So just a reminder of the Geography Visualiser, on the left hand corner up here, we've got this search magnifying glass, which if we click on, we can type in where we want to go. What we want to look at. And we've got these zoom buttons, which we can click on to zoom in and out of the map. We can also use the scroll bar on the mouse for this. But the most important thing that we are going to look at is this toolbar along the bottom. Can you see that here? The first thing that I'm going to do is change the base map because I want a simpler base map. So this one is a hybrid map showing natural features along with the boundaries of the countries. But I want something a little bit more simple so that I can see all of the data. So I'm gonna click on the base maps button here. I'm gonna go across to all of these options. I'm gonna scroll down and I'm gonna click on light grey canvas. And can you see this gives us all the different country boundaries, but it's a lot more simple. There's no other information. So I'm gonna be able to analyse and look at the information that I add, the different layers that I add much more easily. So now what we want to do is add different layers to this map, different layers of geographical data, and that's what we can do with GIS, with a geographical information system so that we can add different layers of geographical information and analyse those different bits of information on a map. So I'm gonna click on this button here that says add layer. It's a plus button inside a circle and it says add layer. I'm gonna click on that and we can see all of these different options, all of these different layers of geographical information that we can add to our map. So I'm gonna scroll down. I'm using the tool on my mouse to scroll, but you could also use this scroll bar here on the right hand side. I'm gonna scroll all the way down until we get to population by country. We're gonna see if this layer of information is useful to us. So I'm gonna click on this button here. On the left hand side it says, add. I'm gonna click that and add that layer of data to our map. You can see it's populated the map because it's changed colour underneath. And then if we click the X, then we can now analyse this information. Now this shows us the population of countries around the world. And if we click on this legend button on the toolbar at the bottom, can you see this legend says, legend at the bottom. If we click on that, then that then brings up a key here on the right hand side and we can see what the different colours mean. So the darker colours are the countries with the bigger populations and the lighter colours are the countries with the smaller populations. Now you might want to pause this video and think for a second. Is this information, is this information on this map here, is this useful for us? Is this useful data to think about where people live? Or does it potentially have some problems? Is it a little bit problematic? Just you might wanna pause and have a little think about that. Do you think it's useful to us or do you think maybe it might be a little bit problematic? Now, actually it might be a little bit problematic, ain't it? Because it only really shows us the population of a whole country, nothing within the country. It just shows us the whole country. So we can see the United States here, that's a darker colour. So that tells us that there is a a large overall population here. But then if we have a look over another country, let's zoom in here and have a little look at Belgium. And that's got a smaller population. And if you look at them both, it's not really a surprise is it that the USA has got a big population and Belgium's got a small population. 'cause Belgium's a much, much smaller country, the United States is much bigger. So it's actually not very useful to us, is it? Because that's obvious that the smaller country is gonna have a smaller population. So it doesn't really give us a lot of useful information. And you also expect that there's population throughout the USA and the population throughout Belgium is going to be different. It's not gonna have the exact same population throughout the whole country. We're gonna expect areas of high and low density populations depending on different parts of the country. So let's have a little look at something else then. Let's go to this thing at the bottom here that says open map. Now if we click on that, there's a lot variety of different options here. And let's have a little look at human footprint. So we click on human footprint, right? And then let's look what that does. So if we click again on legend here at the bottom, that's gonna bring up a key, which is showing us that the darker colours, the blue colours is a low human footprint. And we go through from blue to green to yellow to orange to red. And the red at the top is the high human footprint. So let's have a little look at what human footprint actually is then. And if we click back to open map and we see here it say when we got a human footprint, there's a little I here for information. So if we click on the information, then that tells us a lot more about human footprint. And I would encourage you to read this. You can scroll down and there's a big description here about exactly what human footprint is. So the human footprint map here, if we can read this little bit here. The human footprint map was produced by combining 13 global data layers that spatially visualise what is presumed to be the most prominent ways humans influence the environment. So these layers include human population pressure, which is population density, human land use, and infrastructure. So built up areas, nighttime lights, land use, land cover, and human access for coastlines, roads, railways. So it's telling us all about the different ways that humans use the land. So this human footprint map, combining all these little bits of information, is given us an idea about where the humans are, where the most humans are in the variety of different places across the world. So this map's not quite a population distribution map, but it's very, very close because it's about where people live. And the areas that people have developed the things like infrastructure. So it's a much gives us a much better idea about where people live across the globe. And also it gives us specifics within the country, which the other map didn't. So we can look in in more detail at individual countries and how that population is spread and distributed and how the land use is distributed around those different countries. So another layer which could be really useful to us, and if we go to open map again, is this light pollution here. So let's have a little click on light pollution and have a look at this one. So this is the amount of light pollution at different places around the world. And this gives an indication of where people live, different parts of the world. And we can look at all these different areas, the areas that have the most light pollution and some areas that don't particularly have any light pollution. Now obviously there are problems with this type of map. There are problems with this map because it might be the case that there are lots of people living in an area, but it's not particularly developed. It's not got lots of towns and cities where there's going to be lots of electrical devices, electrical equipment, which is emitting lots of light and creating that light pollution. So it's not necessarily giving us a brilliant indication or an exact indication of exactly where people live because it's dependent upon the infrastructure that the people are using in those particular areas. So although this geography visualizer doesn't have a specific map for population density, because it's got these different maps and this human footprint map, this can give us an indication of where people are living and the impact that people are having in different parts of the world. And this then allows us to analyse and have a better understanding of where people live around the world.