Tonight on the Colbert Report

MONDAY 3/12 -- Nicholas Kristoff -- columnist, The New York Times

TUESDAY 3/13 -- Michael Eric Dyson -- author, "Come Hell or High Water"

WEDNESDAY 3/14 -- Ed Viesturs -- mountain climber and author, "No Short Cuts to the Top"

THURSDAY 3/15 -- Ayaan Hirsi Ali -- author, "Infidel"