Thomas Edison’s 146-question employment test was so difficult that the inventor’s own son—as well as Albert ...

Scientists are finding experimental evidence that the transition between wakefulness and sleep is a portal for creative thought.

Thomas Edison did not invent the light bulb, ... In 1876, Edison had his team work on an improved carbon microphone for new telephone devices. By 1890, ...

On September 4, 1882, Thomas Edison flipped the switch on the world’s first electric grid—right here in Lower Manhattan. ... who arrived in 1884 to work for Edison.