Pope Francis is shaking things up again. The pontiff with a penchant for surprises is making new waves by launching a survey of his flock on issues facing modern families — from gay marriage to divorce. Very specific questions are being sent to parishes around the globe in preparation for next year's synod of bishops, a grassroots effort that experts say is unprecedented. "It's fascinating," said Thomas Groome, a professor of theology at Boston College. "It's pretty astonishing," agreed Marianne Duddy-Burke, executive director of the gay Catholic organization DignityUSA. Advertise | AdChoices Vatican watchers say Francis' polling attempt is extraordinary...