Mia Birk is president of Alta Planning + Design and a principal of Alta Bicycle Share is a keynote speaker at “8-80 Cities Forum: The Doable City.” The Knight Foundation-sponsored conference on fostering livable cities is happening through today in Chicago.  Above: Gil Penalosa speaking. Credit: Emily Munroe, 8-80 Cities. What is “Doable?” As 8-80s […]