Question: The Christian Century and Fortune, are both which form of publication?
Context: Reaching for the Invisible God: What Can We Expect to Find?  is a book written by Evangelical Christian writer Philip Yancey and published by Zondervan in September 2000.  The popularity of Yancey's 1997 book "What's So Amazing About Grace? " helped boost the sales of "Reaching for the Invisible God" to the point that it appeared on religion bestseller lists immediately upon publication.  Within a month, Zondervan reported sales of 94,000 copies.  While preparing to write the book, Yancey asked several people how they knew that their trust in Jesus had changed their lives, and one Christian radio host responded, "I have no trouble believing God is good.  My question is more, what good is he?  ... I cry out to God for help, and it's hard to know just how he answers".  "Reaching for the Invisible God" includes discussion of Yancey's bad experiences of growing up in a very judgmental church, a theme that he had previously discussed in "The Jesus I Never Knew" and "What's So Amazing About Grace?"  and later returned to in "Soul Survivor".  In November 2000, "Reaching for the Invisible God" became the first print book to be released as an e-book by Zondervan, appearing on Microsoft Reader.  The book received the 2001 "Christianity Today" Book Award in the spirituality category.  A "Topeka Capital-Journal" review called "Reaching for the Invisible God" "another accessible book from Yancey on a theologically complex subject for those who believe in God, and those who aren't sure if they can".  David Crumm of the "Lincoln Journal Star" wrote a review of the book and said that Yancey's honesty about his own personal pursuit of God is remarkable.  In a 2001 review in "The Christian Century", Peter Marty writes that Yancey "succeeds brilliantly [in] tell[ing] the truth about the Christian life 'without overselling it'". Grant Wacker (born 1945) is a historian of religion in America.  A graduate of Stanford University (BA, Philosophy) and of Harvard University (Ph.D., Religion), he taught in the Department of Religious Studies at the University of North Carolina at Chapel Hill from 1977 to 1992.  In 1992 Wacker moved to Duke Divinity School, where he is the Gilbert T. Rowe Professor Emeritus of Christian History.  He is the author or co-editor of seven books, including "Heaven Below: Early Pentecostals and American Culture" (2001), and "America’s Pastor: Billy Graham and the Shaping of a Nation" (2014), both published by Harvard University Press.  Winner of two distinguished teaching awards, Wacker has authored more than thirty journal articles and book chapters, more than one hundred book reviews, and op-eds and essays in magazines and newspapers.  He is past president of the Society for Pentecostal Studies, past president of the American Society of Church History, and a former senior editor of "Church History: Studies in Christianity and Culture".  He is an advisory editor of "Books and Culture", "The Christian Century", "Fides et Historia", and "Religion and American Culture".  Since 2010 he has served as a trustee of Fuller Theological Seminary.  Wacker lives with his wife Katherine in Chapel Hill, North Carolina, where they are lay members of Orange United Methodist Church. Disappointment with God: Three Questions No One Asks Aloud is a book written by Philip Yancey and published by Zondervan in 1988.  It is one of Yancey's early bestsellers. "Library Journal" reviewer Elise Chase called the book "extraordinarily empathetic and persuasive; highly recommended".  Mark DeVries of "The Christian Century" reviewed the book and wrote that, through the book, Yancey "cuts through the pollyannaish denials that so often characterize evangelical treatment of unbelief, disappointment and unanswered prayer".  The "Christian Bookstore Journal" listed "Disappointment with God" as the fifth-bestselling Christian book in 1989.  In a 1991 "Ministry" review, Daniel Guild calls the book "Yancey at his superlative best".  In 2000, Jim Remsen of "The Philadelphia Inquirer" called the title of the book evocative.  A 2001 article in "U.S. Catholic" states that "Disappointment with God" demonstrates Yancey's willingness to address difficult questions.  In 2002, Mike Collins of the "Charleston Gazette-Mail" recommended the book for rape victims.  In 2005, Christian apologist William Lane Craig wrote that he "enjoyed reading "Disappointment with God" and found much of it to be meaningful and poignant", but that he disagreed with the thesis of the book.  Hong Kong film director Clement Cheng read the book and called it thought-provoking. The Myth of a Christian Nation: How the Quest for Political Power is Destroying the Church is a 2007 book by theologian Greg Boyd on the relationship between politics and Christianity.  Following the book's release, Boyd, who was already a noteworthy theologian before the book's publication, gained national attention after the "New York Times" published a front page cover article on the book and Boyd's rejection of the religious right.  He also discussed the book on "The Charlie Rose Show" and in the CNN documentary "God's Warriors".  The book was also discussed widely in publications such as "Christianity Today" and "The Christian Century". William Henry Willimon (born May 15, 1946) is an American theologian and bishop in the United Methodist Church, who served the North Alabama Conference.  He is currently Professor of the Practice of Christian Ministry at Duke Divinity School.  He is former Dean of the Chapel at Duke University and is considered by many as one of America's best-known and most influential preachers.  A Pulpit & Pew Research on Pastoral Leadership survey determined that he was one of the two most frequently read writers by pastors in mainline Protestantism alongside Henri Nouwen.  His books have sold over a million copies.  He is also Editor-At-Large of "The Christian Century". Fortune is a multinational business magazine, published and owned by Time Inc. and headquartered in New York City.  The publication was founded by Henry Luce in 1929.  The magazine competes with "Forbes" and "Bloomberg Businessweek" in the national business magazine category and distinguishes itself with long, in-depth feature articles.  The magazine regularly publishes ranked lists, perhaps best known is the Fortune 500, a ranking of companies by revenue that it has published annually since 1955. Religion News Service (RNS) is a news agency covering religion, ethics, spirituality and moral issues.  Based at the National Press Club in Washington, D.C., RNS has a network of correspondents around the world, providing news and information on all faiths and religious movements to the nation's leading newspapers, news magazines, broadcast organizations and religious publications.  RNS wire reports are distributed to more than 170 media outlets that include "The Washington Post", Huffington Post, National Public Radio, and "Chicago Tribune" as well as religious outlets such as "America", "Sojourners", "Christian Century", "Religion & Ethics Newsweekly", and "".  The total circulation of these outlets exceeds 100 million readers. Edward John Carnell (28 June 1919 – 25 April 1967) was a prominent Christian theologian and apologist, was an ordained Baptist pastor, and served as President of Fuller Theological Seminary in Pasadena, California.  He was the author of nine major books, several of which attempted to develop a fresh outlook in Christian apologetics.  He also wrote essays that were published in several other books, and was a contributor of articles to periodicals such as "The Christian Century" and "Christianity Today". The Christian Century is a Christian magazine based in Chicago, Illinois.  Considered the flagship magazine of U.S. mainline Protestantism, the biweekly reports on religious news; comments on theological, moral, and cultural issues; and reviews books, movies, and music.  The "Century" website hosts blogs by Drew Hart, Carol Howard Merritt, Elizabeth Palmer, and Daniel Camacho, along with a network of more than 100 outside bloggers. Lala de Cizique was a Greek woman who may be the first manuscript illuminator known by name.  She "painted on ivory and on parchment in Rome during the first Christian century".
Answer: magazine