Phones have come a long way since Alexander Graham Bell's first telephone call in 1876, a moment that changed the course of technology's history. President Franklin D. Roosevelt's series of mass radio transmissions laid the foundation for the podcasts of today, and the arrival of Space Invaders in the United States made arcade games popular, which then developed into the current multi-billion dollar video game industry. In Flash Points: Power On , readers will learn about the evolution of technology through pivotal moments in history, leading to society's growing dependence on technology.