Peggy Fletcher Stack (Salt Lake Tribune)

A Mormon student surfs the Internet for a school assignment and discovers that Mormon founder Joseph Smith had multiple wives, even marrying a 14 year old.

A returned Mormon missionary, preparing a Sunday school lesson, comes across a website alleging that the Book of Mormon was plagiarized from a novel.

Surprised by what they find so easily online, more and more Mormons are encountering crises of faith. Some even leave the fold and, feeling betrayed, join the ranks of Mormon opponents.

It's a growing problem, acknowledges Marlin Jensen, the outgoing historian for the Church of Jesus Christ of Latter-day Saints, and it's one Mormon leaders are working to confront.

"Never before have we had this information age, with social networking and bloggers publishing unvetted points of view," Jensen said. "The church is concerned about misinformation and distorted information, but we are doing better and trying harder to get our story told in an accurate way."

The church "has made no effort to hide or obscure its history," Jensen said, but some aspects — such as polygamy — "haven't been emphasized often because they were not necessarily germane to what is taught at present."

Can the LDS church do better to explain its history, even to its own members? Sure, Jensen said.