Searching for Shangri-La

Back in 1933 novelist James Hilton wrote of an earthly paradise hidden in the Himalayas. He called it Shangri-La. But Hilton didn't invent the idea. Myths about Shangri-La go back centuries, and they pop up in a variety of places from Tibet to Kashmir. In this hour of To the Best of Our Knowledge, we'll go in search of this earthly paradise. And we'll talk with a documentary film maker who went trekking through the mountains of Tibet in search of the real Shangri-La.