BALTIMORE--Follow us from leafy Roland Park to nearly treeless Sandtown, a short trip that reveals deep inequality.

The nine mile route takes about 20 minutes, though we've sped it up in this driving tour video.

The single family homes and neatly manicured lawns in Baltimore's wealthier, whiter neighborhoods gradually give way to littered sidewalks adjacent to the battered rowhouses of the city's poorer African-American neighborhoods.

As the trip progresses, median household income and average life expectancy steadily drop.