Downtown Birmingham and some nearby neighborhoods are seeing an influx of new residents, mainly young professionals and retired baby boomers. It’s a national trend -- the Census Bureau reports millions of Americans have migrated from the suburbs to the cities since 2010. Experts like Bruce Katz,a Vice President of the Brookings Institution and co-author of “The Metropolitan Revolution: How Cities and Metros Are Fixing our Broken Politics and Fragile Economy," think this is a good thing. Katz believes cities like Birmingham are the new economic engines in post-recession America. Katz spoke with WBHM's Greg Bass about his visit to Birmingham last year, and the central idea behind what he calls “The Metropolitan Revolution.”