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Discusses the Bermuda Triangle, an area of the Atlantic Ocean where numerous ships and airplanes have mysteriously disappeared, and examines various efforts to identify this phenomenon and discover its causes.

Describes the appearance of the phenomena known as crop circles and offers various explanations as to how they were created.

Discusses the phenomenon of unidentified flying objects, including notable sightings throughout history and possible explanations for them.

Simple text and photographs describe a variety of motorbikes, including mopeds, scooters, sidecars, and patrol bikes.

Examines the disappearance of the dinosaurs and the various theories that exist to explain it.

Examines the phenomenon of ESP, or extrasensory perception, and the theories that exist to explain it.

Examines the question of whether there is life on other planets, looks at how scientists try to solve that mystery, and includes reportedly true accounts of encounters with aliens.

Explores the phenomenon of black holes, explains why astronomers think they exist, what causes them, what they are like inside, and the search to find black holes in space.

Examines the phenomenon of haunted houses and their ghosts, citing specific examples, and discusses the various theories that seek to explain them, including how they may be faked.

Looks at legends about vampires and werewolves in different cultures, their reputed appearance and behavior, similarities between the two creatures, and possible scientific explanations of the old stories.

Features a brief discussion of water, where it comes from, and how it is used, and provides instructions for seven water-related science experiments.

Introduces the history and different types of bridges and tunnels, explains how they are built, and includes related activities and projects.

Explains the many methods of communication, from paper and pen to satellites.

Describes various kinds of toys that have been enjoyed throughout history, with directions for making a few simple toys.