Khan Academy
Khan Academy: Plate Tectonics: Geological Features Convergent Plate Boundaries
This video discusses the geological features of convergent plate boundaries. [6:03]
PBS
Pbs: Secrets of Lost Empires the Incas
This is the transcript of a television documentary from PBS which explores the great building projects of the Incas. It does so through an interview with Jean Pierre Prtozam.
PBS
Nova: Ice Mummies
From an episode of NOVA broadcast by PBS in 1998, learn about an expedition to uncover sacrificial "ice mummies" in the Andes.