Cohen wrote The Ethicist column in "The New York Times Magazine" between 1999 and 2011. From 2001 to 2005, he also answered listeners' questions on ethics for the National Public Radio radio news program, "All Things Considered". The "Times" ended Cohen's stint as The Ethicist, making his final column Sunday, February 27, 2011. The column continued with the same format but a new byline until early 2015, when it abandoned the question and answer format for a discussion format among a number of persons.