Cities need to grow up - not out - to survive, researchers warn
Poor land records, rampant speculation and weak or corrupt implementation of regulations means that cities are using land inefficiently
WASHINGTON, Jan 31 (Thomson Reuters Foundation) - Urban areas are expected to grow by 80 percent by the end of the next decade, and unless they grow up rather than out, they could be in trouble, according to a new report from the World Resources Institute and Yale University.