Despite the mummies, statues and engravings that the ancient Egyptians left behind, there is still much controversy over just what, exactly, they looked like.
Ancient Egypt's massive pyramids are another element of their legacy that has long puzzled the experts. Just how, exactly, did a society with no modern construction equipment manage to transport the giant, heavy stones needed to build the enormous pyramids? According to recent research by physicists at the University of Amsterdam, part of the answer may be wet sand.