Louisiana mound built 3000 years ago in a matter of weeks; new study of Sicilian mummies; Hunley submarine retains pieces of explosive device; Nabatean city in Israel reopened after restoration
Soil studies show Poverty Point mound rose within months, not years
Sicilian mummies tell stories of life and death
Hunley cleaning process suggests entirely new cause of its sinking
Nabatean city re-opened after vandalism repairs