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Skyscraper Facts

From the father of the skyscraper to a building with a view by Karen Barss The Eiffel Tower, in Paris, France Related Links Skyscraper HistoryTallest Building TimelineWorld's…

Rules That Needed to be Broken

"Open" for Business — Tennis (1968) Cause: Tennis was split between two parties - amateurs and professionals - and each had what the other wanted. The amateurs were playing in the…

Escherichia coli

(Encyclopedia) Escherichia coliEscherichia coliĕshˌərĭkˈēə kōˈlī [key], common bacterium that normally inhabits the intestinal tracts of humans and animals, but can cause infection in other parts of…

DK Science: Animal Kingdom

CLASSIFICATIONFIND OUT MOREAnimals belong to the largest and most diverse of the five kingdoms of living things. So far over two million animal species have been identified. All animals…

Dracula: The Terrifying Truth

The Terrifying Truth About Dracula How a 15th-century Walachian prince became a frightening modern legend by David Johnson The rugged Transylvanian Alps provide one of the most…

steam engine

(Encyclopedia) CE5 Steam engine steam engine, machine for converting heat energy into mechanical energy using steam as a medium, or working fluid. When water is converted into steam it expands,…

impotence

(Encyclopedia) impotenceimpotenceimˈpətəns [key], inhibited sexual excitement in a man during sexual activity that, despite an unaffected desire for sex, results in inability to attain or maintain a…