There are 597 cities and villages in Wisconsin and over 1,300 municipalities in Illinois, and we now know which of those are the loneliest cities in each state.
Recently, the world welcomed its seven-billionth person. But what does it all mean?
In a stylish video titled ‘World Population: A National Geographic Tour,’ the nature magazine stalwart puts things in perspective with tidbits about how many people are born and how many die every second of every day, the average human lifespan, and the growing popularity of “mega-cities.”