A world map showing cities and its population.

Refrred the code from this visualization - https://blocks.roadtolarissa.com/curran/752b97cef3f880a813ab

City is represented by circles. The larger the circle, the higher the population. Each pixel in the circle represents 25000 people in the city. The density of the populace can be inferred from the circles' overlapping and increasing brightness. We can hover over the cities to see their names and population.