. . "Technologie Ouvrages pour la jeunesse." . . . "Why can't we fly to the moon in a jet plane? How do high-speed trains float in the air? Can we make houses from straw? Technology Mysteries Revealed answers these questions and throws light on many technology puzzles, such as why do rubber bands stretch, what is an alloy, and will robots be smarter than us one day?" . . . "Technology mysteries revealed" . "Presents, in question-and-answer format, information on technology, including why jet airplanes can't fly into space, how helicopters hover, and when the wheel was invented." . . . . . . "Juvenile works" .