Rangos Omnimax Theater at the Carnegie Science Center, One Allegheny Ave., North Side, is showing "Grand Canyon Adventure: River at Risk," "Mummies: Secrets of the Pharaohs" and "Wild Ocean."Special showings of "Hurricane on the Bayou" will be shown for StormFest on Friday and Saturday.Admission cost varies. Omnimax is not recommended for children younger than 3.Call 412-237-3400 for show times.