Did you know that the home-birth world had its very own rock star? Yep: Ina May Gaskin, the world's most famous midwife, worshiped by natural-birth proponents since 1975, when her book Spiritual Midwifery, now in its fourth edition, captivated woman everywhere.And this week, when a new doc examining her life and work opened in New York City, with Gaskin on hand to answer post-film questions, her groupies showed up in full force-more than 200 of them. Many of them were hugely pregnant, and a handful carried newborns, nursing in their slings. ...