"I honestly could have cried."
A McDonald's customer was moved to tears when a busy cashier stopped to help a handicapped man cut and eat his food.
What makes you a kind stranger? Husband and wife production team Sarah Sellman and Greg Grano want to know. In a new series
In what cities is a needy stranger more likely to receive help? What sort of community teaches a citizen to withhold compassion toward strangers? Dr. Robert Levine has spent much of the past two decades systematically exploring these questions.