In this article, four prominent media professionals describe how the news agenda is elaborated in print, radio, television and internet journalism. Felipe Aldunate, editor of AméricaEconomía; Carola Urrejola, presenter of En Boca de Todos of Canal 13, Nibaldo Mosciatti, news director of Radio Bío Bío; and Doug Mitchell, director of Next Generation Radio, show what happens inside their respective workplaces, examining the journalistic mechanism and the editorial criteria behind their news selection process.