An LDS 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 LDS 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 members of the Utah-based Church of Jesus Christ of Latter-day Saints 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 LDS general authority Marlin Jensen, the faith’s outgoing church historian, and 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 in an interview Monday. “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. “Can we weave some of this into our seminaries, institutes and adult curriculum? I think we can, and efforts are under way to do that.”

The church has assigned a staffer to create “a strategy to get church history onto the Web,” he said. “We are also working on an initiative to answer some of these more pressing questions.”

Late last year, the church’s publishing arm, Deseret Book, put out No Weapon Shall Prosper: New Light on Sensitive Issues to address some of the hot-button issues of Mormon history and doctrine, offering members ways to answer critics.

While Mormons should not be “consumed with provocative materials critical of the [LDS] Church, the day for ignoring such matters is long past,” editor Robert Millet wrote in the book’s introduction. “The Internet is filled with thousands of pages of anti-Mormon polemic, and it is extremely difficult for people to receive an honest and fair appraisal of Mormonism without significant effort on their part.”

Chapters are written by various authors — most of them professors at church-owned Brigham Young University — and tackle tough topics, including the Mormon view of God; the differing accounts of founder Joseph Smith’s “First Vision”; Smith’s money-digging activities and plural marriage to teenage girls; the lengthy quoting of biblical passages in the Book of Mormon; and new questions surrounding the faith’s signature scripture from DNA analysis.

The contributors stress that there are sound answers to these sticky questions.

“We are fully persuaded that Mormonism is not only true and faithful but also reasonable,” Millet wrote. “Ours is in fact a rational theology.”

Jensen insists critics overstate the LDS exodus over the church’s history.

“I have heard that our overall activity, especially in the United States, is as good as it’s ever been,” he said. “To say we are experiencing some Titanic-like wave of apostasy is inaccurate.”

Other Mormon observers, though, see such defections as a major trend, especially among 20-somethings.