president obama warning against another recession if the us defaults on its debt. stocks continued to fall over the conference. no doubt each crisis has shifted the american landscape. some areas are thriving and others are worse off. one of the most obvious shifts have been in job developments urban areas have seen the largest boom because tech companies have moved from the ub bu suburbs into the cities. some areas are soaring back and some sinking further. richard is here to map it out for us. he is not only senior editor of the atlantic and director of the martin prosperity institute. you say the economic landscape is being reshaped around two kinds of hubs and centers of