Sometimes a city's influence goes beyond its borders well into the region. Our guests this week both work with this idea of the global influence of cities. Saskia Sassen is professor of sociology and a member of the Committee on Global Thought at Columbia University. Her work focuses on globalization and global cities. We'll speak with Saskia about the idea of denationalization, and how it applies to urban spaces.?

We'll also speak with Richard Longworth, author of a new book called "Caught in the Middle, America's Heartland in the Age of Globalism." Richard will talk with us about globalization's impact on the American Midwest.