(Encyclopedia) Doolittle, James Harold, 1896–1993, American aviator, b. Alameda, Calif. After serving in World War I as a flier he returned to school and earned a Sc.D. from MIT. He then became noted…
(Encyclopedia) Rickenbacker, Edward Vernon, 1890–1973, American war hero and airline executive, b. Columbus, Ohio. He became a car racing driver at 16 and set numerous speed records. In World War I…
Spotlight on Bats Mysterious Mammals on the Fly Source: U.S. Fish and Wildlife Service Bats may be the most misunderstood animals in the United States. Almost all U.S. bats…
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CE5
Types of buttresses
buttress, mass of masonry built against a wall to strengthen it. It is especially necessary when a vault or an arch places a heavy load or thrust on one part…
The Question: What is the difference between a wasp and hornet? The Answer: Essentially, the term "hornet" (like "yellow jacket") refers to a kind of wasp that…
(Encyclopedia) seaplane, airplane designed to take off from and alight on water. The two most common types are the floatplane, whose fuselage is supported by struts attached to two or more pontoon…
