This is Ask An Expert, where every weekday at 9:20am, KCBS is giving you direct access to top experts in various fields.

Today: As families navigate economic anxieties and the ballooning costs of the U.S. housing market, the birth rate has plummeted in America.

To help us understand how we got here and what could be coming next, KCBS's Steve Scott spoke with Professor Michael Lens, Professor of Urban Planning and Public Policy at UCLA Luskin.