The Spark of Genius: 20 Inventions That Changed the World

2 The Printing Press: Words That Changed the World

3 Electricity: Lighting Up the Future

4 The Telephone: Bridging the Distance

5 The Steam Engine: Powering Progress

6 The Automobile: Reinventing Mobility

7 The Airplane: Conquering the Skies

8 Penicillin: The Accidental Lifesaver

9 The Camera: Capturing Time

10 Radio Waves: Voices Across the Air