UFO investigators held a press conference at the Roswell Civic and Convention Center on Thursday to announce that they found ... something. "At this point, we don't know what it was or why it was there," said UFO investigator Chuck Zukowski. "I don't want to speculate." "We want to announce to the world that this stuff needs further analysis," explained Dr. Bill Doleman, a retired archaeologist who supervised the dig where the items were found. The artifacts were discovered in 2002 during a dig sponsored by the Sci Fi Channel, at a site where some eyewitnesses say a mysterious craft...