Brasch, Nicolas

When the nearby volcano erupts and his family flees to safety, Juan worries about his father who works at the base of the mountain.

Currency is a fact of human life, and this book explores its genesis, beginning with those early coins and precious objects and tracing their legacy to the banknotes and fraud-detecting devices of the twenty-first century.

This book captures the spirit of discovery that characterized the tumultuous century, while exploring the lasting legacy of these discoveries, and their impact on human life. Illustrated timelines, primary source photographs, and clear diagrams explain the inventions of the era, while informative sidebars add depth.

Provides answers to thirteen questions about built structures and civil engineering, discussing the technology used to build Stonehenge, the Eiffel Tower, the Hoover Dam, and other structures.