Co-presented by ISLAND PRESS and TOWN HALL CENTER FOR CIVIC LIFE. For decades the American Dream has been defined by two markers; the suburb and the automobile. Though planners and environmentalists have worked to redefine that vision for years, the economy has recently produced a confluence of factors that have ordinary citizens rethinking this archetypal image of American prosperity. In this forum, Brooking Institution fellow Christopher B. Leinberger, strategist, developer, teacher, and author of The Option of Urbanism (Island Press); Bruce Agnew, director of the Cascadia Center; and Alex Steffen, executive editor of Worldchanging: A User's Guide to the 21st Century (Abrams); along with other panelists, will discuss ways to create walkable urban centers, encourage transit, and curtail suburban sprawl, among other things. Tonight's panel is the first in a new series, the Thought Leaders Discussion Panel on the Built Environment, sponsored by Island Press and Town Hall Seattle. $5 tickets are available at the door, or in advance via www.brownpapertickets.com (1-800-838-3006). Town Hall Seattle is at 1119 Eighth Avenue (entry on Seneca Street). Preferred seating for Town Hall members. For more information, please call (206) 652-4255 or see www.townhallseattle.org.