UFO's are a truly global phenomenon. Although many of the best-known cases have taken place in North America, amazing stories of witnesses encounters with strange disc-shaped objects (and their occupants) have come from every corner of the globe. From a floating platform watched by dozens in Indonesia, to a Saturn-shaped object that flew over a ship off the coast of Brazil, to a landing Down Under, UFO's have been baffling witnesses and making headlines around the world. What are some of the most interesting cases? Which ones seem most mysterious? And what can one of the world's most active UFO researchers and investigators tell us about UFO's, from A to Z? Join Chris Rutkowski as he takes us on a tour of A World of UFOs.