History of The Panama Canal in Central America
History of The Panama Canal in Central America - The panama canal creates one of the longest shortcuts in the world. Before it was built, ...
Margaret Knight: Inventor of The Flat-bottomed Paper Bag Machine
Margaret Knight: Inventor of the flat-bottomed paper bag machine (1838-1914) Margaret Knight was fascinated by machinery; she eventually...
The Great Pyramid At Giza (7 Wonders)
The Great Pyramid At Giza (7 Wonders) - For thousands of years, ancient Egypt was ruled by kings called pharaohs. For much of that time, Eg...
Guglielmo Marconi: Inventor of Radio (1874-1937)
Guglielmo Marconi: Inventor of Radio (1874-1937) Most people think of radio as something they listen to at home or in the car, but the u...
Martin Cooper: Developer of The Cell Phone
Martin Cooper: Developer of The Cell Phone The telephone and radio were two of the greatest inventions of the late 19th century. During ...
Stephanie Kwolek: Inventor of Kevlar
Stephanie Kwolek: Inventor of Kevlar Sometimes when a scientist makes a discovery, its nature and usefulness are not immediately clear. T...