More than once in history the hunter has become the hunted, and what if that "souvenir" for the aliens was you?; Not everyone has actually seen a UFO, but almost all of us have imagined what it would be like.; Fire in the sky in an Alpine village.; What some flying saucers might be.; Aliens astronauts may have left their mark on our planet during prehistoric periods.; Reports from the readers of UFO sightings.; Thousands of birds tumble from the sky in 1846.; In recent years, scientists have become interested in the Spirit Lights seen by Quapaw Indians hundred years ago.; The aftermath of a storm in Tasmania produced a memorable thing found on a beach.