Nikola Tesla (1856-1943) patented the Alternating Current (AC) system we still use today. Around 1900, his vision was to transmit energy without wires so that everybody could have energy for free. Tesla's vision failed. Today, he is almost forgotten - so the director Michael Krause went to find out All About Tesla. He started his research in New York City. Michael Krause met with busy researchers and adamant fans of Nikola Tesla. What do people do with Tesla's inventions, ideas and visions today?