When Uncle Al is kidnapped by Dr. Kron-Tox and sent to prehistoric times, Andrew, his cousin Judy, and Thudd the robot try to use Uncle Al's latest invention, the Time-A-Tron, to rescue him, and learn first-hand about the origins of the universe.
Uses color photographs and text to present interesting facts about about inventions, looking at some common items such as zippers, ballpoint pens, and teabags, and providing information on modern creations like CDs and mobile phones.
Collects one hundred facts about inventions, describing inventors and inventions that have improved aspects of warfare, agriculture, and life for man since the Stone Age. Includes illustrations, cartoons, quizzes, and activities.
After visiting the Hall of Flight at the Bearsonian Institution, the Bear cubs decide to invent their own airplanes. Includes information about the history of flight and instructions for making various balloon-powered aircraft.
Discusses how the earliest discoveries of humans and flights of imagination brought about the most technologically advanced inventions of the twentieth-century.