A frequent lecturer, Blankenhorn's articles have appeared in scores of publications, including the New York Times, the Washington Post, the Los Angeles Times, USA Today, The Public Interest, First Things, and Christianity Today. He has been profiled by the New York Times, USA Today, CBS Evening Newsand other news organizations, and has been featured on numerous national television programs, including Oprah, 20/20, CBS This Morning, The Today Show, Charlie Rose, ABC Evening News, and C-SPAN's Washington Perspectives.
In 1977, he graduated magna cum laude in social studies from Harvard, where he was president of Phillips Brooks House, the campus community service center, and the recipient of a John Knox Fellowship. In 1978, he was awarded an M.A. with distinction in comparative social history from the University of Warwick in Coventry, England.