Currents of Genius

For ten thousand years, night was a wall. Then, in a single human generation, three of the most remarkable men of the age tore that wall down — and fought a bitter, brilliant war over how it would be done. Thomas Edison, the deaf Ohio newsboy who became the Wizard of Menlo Park and switched on a city. Nikola Tesla, the visionary Serbian immigrant who arrived with four cents and a dream of a motor ...