 As we heat up the world's atmosphere, there's more chance of intense rainfall, which can lead to more flooding. And there's an even bigger problem. When those floods hit informal settlements, it can be disastrous, as we often don't know much about them. So these informal areas by nature are growing in areas where the city has not planned for buildings to be. So this is often hazardous areas close to rivers that might be flooded. Nobody made a plan of where a house would be, which means that you have no idea what's out there.