Learn about plans to revitalize unoccupied spaces and boost the use of public transit at an event featuring presentations by officials involved with downtown urban development from noon to 5 p.m., Thursday, May 7. Networking and a cocktail reception follow the event from 5 to 6:30 p.m. $100 for Metropolitan Pima Alliance members; $125 for nonmembers. Prices include lunch. RSVP is required by Friday, May 1. Call 751-1030 to RSVP or for more information.