What is a city? Have you ever asked yourself that question? We have all been in a city and we know how to distinguish one when we see it. A city is New York. A city is Bogotá. A city is Rio de Janeiro. But these are only examples and not a definition in itself. What makes these places 'cities'? What elements present in them are those that we associate with the concept of a … [Read more...] about The day of what? Cities, a concept with many definitions