Most sightings of unidentified flying objects can be explained--but not all of them. Those that cannot be are the focus of investigation by UFO researchers. They use video cameras, binoculars, radar, and other technology together with eyewitness accounts to try and identify strange objects in the sky. Students who read this title will find themselves later wondering: what is that strange object in the sky?
Reports of Bigfoot go back to the early 1800s. Since then, several footprints, films, and pictures have been used as evidence that Sasquatch roams the Pacific Northwest. This title examines the history of Bigfoot reports, the tools and technology used by researchers, and considers whether or not Bigfoot exists.
