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

As San Francisco grapples with the homelessness crisis, and local governments are enacting new ordinances and policies aimed at getting people off the street, some are looking to get a deeper understanding of who it is occupying the sidewalks.

To talk more about his personal experiences talking and listening to those experiencing homelessness, KCBS Radio anchor Eric Thomas spoke with Kevin Fagain, award-winning former reporter for the San Francisco Chronicle where he covered homelessness, among other topics, and author of the new book book "The Lost and the Found: A True Story of Homelessness, Found Family and Second Chances."