Riddles of the Sphinx 2010 ( 6)

For over 4000 years, the Sphinx has puzzled all who have laid eyes on it. What is this crouching lion, human-headed creature? Who built it and why? To unlock its secrets, two teams of scientists and sculptors immerse themselves in the world of ancient Egypt — a land of pharaohs and pyramids, animal gods and mummies, sun worship and human sacrifice.