2007-2008 | Origins
	Rexford Ahima February 20, 2008
	Manuel De Landa November 7, 2007
	Stuart Kauffman October 3, 2007
	Janna Levin September 19, 2007
	Kiki Smith February 6, 2008
	Gary Tomlinson March 19, 2008
	Siva Vaidhyanathan February 28, 2008
	Randall White October 24, 2007
2006-2007 | Travel
	Ian Buruma April 12, 2007
	Richard Cohen March 14, 2007
	Caryl Phillips October 25, 2006
	Colin Thubron October 4, 2006
2005-2006 | Word & Image
	Jenny Holzer November 16, 2005