Lesley Stahl On How Becoming A Grandmother "Jolted" Her

For award-winning journalist Lesley Stahl, the most vivid and transforming experience of her life was not covering the White House, interviewing the heads of state or any of her stories as a correspondent for "60 Minutes."

It was becoming a grandmother.

In her new book, "Becoming Grandma: The Joys and Science of the New Grandparenting," Stahl explores how grandmothering changes a woman's life, based on her personal experiences and interviews with friends like Whoopi Goldberg, colleagues like Diane Sawyer, as well as the proverbial woman next door.

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