We’re pregnant! You’re going to be a grandparent!” They’re eight of the sweetest words in the English language – but they also mark a transition to a new role, one with challenges and potential pitfalls as well as delights. Paula Span, who writes the Generation Grandparent column for the New York Times has been thinking about these issues since her own granddaughter’s birth four years ago and talking to developmental psychologists and other experts about the part grandparents can play in an expanding family. She has adapted her columns into an audio title, “The Bubbe Diaries,” to be released by Audible on April 29. She’ll share her findings and ideas, and invite you to share yours, in a virtual discussion.