Karl Keating (b. 1950), a prominent Catholic apologist and author, is the founder and president of Catholic Answers, a lay apostolate of Catholic apologetics and evangelization. He received his undergraduate degree in Applied Math at UCSD in 1972 and went on to get a J.D. at the University of San Diego. He worked as an attorney practicing civil law in the early 1980s. Leaving Mass one Sunday, he found anti-Catholic tracts on the windshields of the cars in the church parking lot. He wrote his own tract in reply and distributed copies of it at the Fundamentalist church responsible for the anti-Catholic tract. That was the start of what has become the country’s largest lay-run apologetics and evangelization organization. Catholic Answers was incorporated in 1982, and in 1988 Karl left the practice of law and went into apostolic work full time. That year marked the publication of his Catholicism and Fundamentalism, the first book to deal extensively with challenges posed by “Bible Christians.” Other books followed: What Catholics Really Believe, Nothing But the Truth, The Usual Suspects, and Controversies. He is at work on several more titles. For nine years Karl served as the editor of This Rock. He has been a columnist for the National Catholic Register and the Canadian Catholic Review and has written for many other publications. Each Tuesday he answers questions on “Catholic Answers Live.” His avocations include backpacking (his favorite locales are the High Sierra and the Grand Canyon) and flying.