21 February 2012 Last updated at 19:19 ET

Walk city What it takes to get Americans out of their cars Stroller moms Watch

Lost community Preserving New York's first centre of Arab-American life Former "Little Syria" resident in the old neighbourhood Watch

Immigrants vs hipsters Ethnic New Yorkers priced out by trendy crowd Mieszko Kalita Watch

Latino exodus Has a crackdown on illegal immigration damaged the economy? Guillermina Monroig Watch

We have a problem Nasa city that reached for stars now reaches for resumes Karen Murphy in front of a shuttle replica in Huntsville, Alabama

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