Complex sentence: Ehrman has appeared on the History Channel, National Geographic, Discovery Channel, A&E, Dateline NBC, CNN, and NPR's Fresh Air and in Time, Newsweek, the New York Times, The New Yorker, and The Washington Post.
Split into simpler sentences: Ehrman has appeared on Dateline NBC, CNN, the History Channel, and NPR's Fresh Air program. He has been featured in Time, Newsweek, the New York Times, The New Yorker, and The Washington Post.