Inside the world's largest refugee camp

Dadaab was created in 1991 as a temporary home for the thousands of people fleeing war in Somalia. Today, it's the largest refugee camp in the world.

Tom Weber talks with Ben Rawlence, author of a new book about Dadaab, "City of Thorns: Nine Lives in the World's Largest Refugee Camp." He's also joined by Hussein Mohamud and Fatuma Mohamed, two Somali Minnesotans who grew up in Dadaab.