Explores the unsolved mysteries of how ancient peoples built the pyramids of Egypt and Teotihuacan and created the Nazca lines of Peru, examines the so-called "Starchild" skull which some believe to be the skull of a child with an alien father and human mother, and looks at cave and rock drawings around the world, addressing questions of whether the ancient humans could have have alien help.
A photographic introduction to extreme biking, looking at events in BMX, mountain, and ice biking, as well as road racing, and including information on bike helmets.
Photographs and text provide information about rock climbing, discussing the factors of body strength, climbing styles, gear, and grades, and looking at the dangers associated with the sport.
Photographs and text provide information about a variety of white water sports, including kayaking, canoeing, rafting, and surfing. Includes information about the dangers and risks of white water activities.
Describes a number of dangerous animals including bears, bees, mountain lions, rattlesnakes, sharks, wolves, and bison; and contains instructions on how to prevent attacks.