Intended for ages 9-12, this book describes the evolution of the telephone from the invention of the telegraph by Marconi to the modern day cell phones that have become a popular part of our everyday life. It also takes a look at: how the telephone works; early inventors and those who continue to enhance the technology; and more.

This inspiring new series explores revolutionary inventions and their inventors. Breakthrough Inventions features inventors' biographies, interesting facts, and historical photographs. Learn about the invention of items that have had enormous impact on our everyday lives. Children will also be fascinated to read about the contributors who helped create these technologies and how their discoveries have evolved over time. Inventors are developing tooth implants that pick up vibrations from cell phone calls and transfer them to the inner ear. The tooth implant would allow a person to receive a call discreetly, or without others knowing.