Douglas Brinkley (born December 14, 1960) is an American author, Katherine Tsanoff Brown Chair in Humanities, and professor of history at Rice University. Brinkley is a history commentator for CNN, Presidential Historian for the New York Historical Society, and a contributing editor to the magazine Vanity Fair. He is a public spokesperson on conservation issues. He joined the faculty of Rice University as a professor of history in 2007. Source: Wikipedia (en)