Joshua Paul "Josh" Mankiewicz (born August 27, 1955) is an American journalist, who has been reporting for Dateline NBC since 1995. He has also reported for The Today Show and NBC Nightly News with Brian Williams. Before moving to NBC, Mankiewicz worked as a producer and reporter for ABC News.Although he has covered a wide variety of stories, he may be best known for his Dateline NBC report on the Atkins Diet.