Asphalt, AS fawlt, is a black cementlike substance that is found in most crude petroleum. It has hundreds of uses. It is used to pave streets,… More>>
Aluminum, uh LOO muh nuhm, is a lightweight, silver-colored metal that can be formed into almost any shape. It can be rolled into thick plates for… More>>
Goethals, GOH thuhlz, George Washington (1858-1928), an American civil engineer and Army officer, directed the completion of the Panama Canal. In… More>>
Bermuda Triangle Pictures



