Urban America

Four out of five of we Americans live in cities.  In fact, most demographers believe the majority of humans on this planet now live in cities; an amazing shift.  For most of our species' history, most of us have lived in the country; in forests and on farms.  So the growth of huge metropolitan areas in the past century or two is a relatively new experiment among our kind.

This week I begin a re-posting of a series on urban America.  I hope you enjoy it.