Historically, the vast majority of people in Europe would live in a village, and lived and died within a radius they could comfortably cover on foot in half a day. The urban population has only recently risen about 50% worldwide[1] (but that includes slums).<p>[1] <a href="http:&#x2F;&#x2F;www.who.int&#x2F;gho&#x2F;urban_health&#x2F;situation_trends&#x2F;urban_population_growth_text&#x2F;en&#x2F;" rel="nofollow">http:&#x2F;&#x2F;www.who.int&#x2F;gho&#x2F;urban_health&#x2F;situation_trends&#x2F;urban_p...</a>