the community -- more people this the area, more tourists, more dollars and du sable is lifted up or does it draw are it down? >> it could link to du sable back to science and industry and create a park space not unlike what happen downtown on the lake front or it could eat due sable. >> we don't want that to happen. let's be clear. >> we don't. i keep being reminded of how young they are. president and first lady michelle obama have a long future in front of them in public life. watching not only the physical space of the library but tear public work will be fascinating. thank you for coming talk south side and to shaumburg for the terrific award tomorrow at the white house. still to cop, brazil's most expensive parking lot. the mayor's race are being influenced by outside millions and the shared legacy of rock and roll and hip-hop. more nerdland at the top of the hour.