For the first time in recent memory, a new manual Mormons will use to study the writings of founder Joseph Smith acknowledges Smith's role in introducing the practice of polygamy. The acknowledgment may not seem groundbreaking to many Mormons or historians, nor will it likely satisfy most critics, but its inclusion in an official course of study is a departure from past practices and may signal a new openness about Mormon history. The change is "not a response to critics who think the church has not been straightforward about its involvement with plural marriage in the 19th century," said David...