"St. Francis And The Middle East," Talk Of The Nation, December 25, 2006.

  "Jewish-Christian Debate In The Middle Ages," Boston University World Of Ideas, November 26, 2006.

  "Mysteries Of The Middle Ages," On Point, WBUR, November 17, 2006.

  "The Peasants' Revolt," In Our Time, BBC Radio 4, November 16, 2006.

  "The Carolingian Renaissance," In Our Time, BBC Radio 4, March 30, 2006.

  "Greyfriars And Blackfriars," In Our Time, BBC Radio 4, November 10, 2005.

  "Abelard And Heloise," In Our Time, BBC Radio 4, May 5, 2005. 

  "Muslim Spain," In Our Time, BBC Radio 4, November 21, 2002.

  "The Cathars," Connection, WBUR, September 4, 2001.