From the hand axe and mathematics to IC chips and the laser, each technological touchstone in human history is described and placed in historical context. Each profile includes the ‘who’ (if we know it), how the idea developed and how it works, the immediate impact of the idea, and the technological ‘children’ of the idea. The time span is 00BC to today. The author closes with an epilogue that looks into the future, a bibliography, and a list of great websites for young inventors.
Ages: 9-14
