Growing up provides natural environments for friendship: school, summer camp, sports teams or other extracurricular activities. But adulthood provides a different challenge for making friends. Writer Laura Regensdorf is the author of a new article in The New York Times Style Magazine, 'How to Make Friends as an Adult,' with tips for finding meaningful relationships and expanding your social circle. Regensdorf speaks more about her own experience and what she's learned, and listeners share their keys to adult friendship.