Pot growers see opportunity in empty Las Vegas homes

``In neighborhoods where residents may be as transient as crowds in a subway station, growers are rarely questioned about dark windows and empty driveways. Those are also hallmarks of abandoned homes, of which America's foreclosure capital has plenty. "I don't know anybody here, and I don't want to stick my nose in their business," an elderly man who lived near the Ballards said one afternoon. Then he shut his door. ''