Tesla came to the states in hopes of working with Edison, Edison turned him away and spent the latter part of his career trying to discredit Tesla. Tesla would sit in his lab surrounded by millions of volts of alternating current shooting around him like lightning. Edison used the AC current to elctrocute many stray animals on the city streets to show the dangers of AC. (in fact ALL electricity whether AC or DC is dangerous if not properly handled. Tesla is actually responsible for nearly EVERY electrical device around you today, he invented the radio, cellular communication, devised the star wars program, created perpetual motion etc.. With Teslas research he was the one to bring light to the worlds fair, his engines are what is responsible for you driving, he used Niagra falls to create and send electricity to Jersy or somewhere on the east coast. His generator designs are still used there. The Government still has not made since of all the research that was confiscated from Teslas labs after his death... Edison despised the fact that his lifes work came so naturally to someone else and also in the instance that Tesla understood more than Edison did. Edison believed that "genius is 1% inspiration and 99% persperation". And honestly Edison and the light bulb, the light bulb was created by a team of scientists, the only real contribution Edison made was thinning the filament inside the bulb so that it would burn brighter and longer.