On some criticisms of String Theory
Solvay lecture on the cosmological constant and the string landscape (3/06)
Review of AdS/CFT duality with Gary Horowitz (2/06)
Scientific American article with Raphael Bousso on the string landscape (9/04)
SLAC Summer Institute Lectures on Recent Developments in String Theory (12/98)
A Colloquium on String Duality (7/96)
TASI Lectures on D-Branes (11/96)