If the World’s Population Lived in One City If the world's billion people lived in one city, how large would that city be if it were as dense as.
Wo kommen eigentlich Bärte her? (Infografik)
A PhD in Beards This infographic is all about facial hair. Learn about where facial hair comes from, what people think of you when you have facial hair, and also some random facts in the history of beards.