Armentrout, David

Explores tsunamis, discussing what makes them occur, warning systems, specific sea waves that have made headlines, and other related topics.

Chronicles the rise and fall of the Ghana, Mali, and Songhay empires in West Africa from the first to the sixteenth century, and includes a time line, glossary, pronunciation guide, and further reading list.

Looks at wheels as simple machines, discusses the need for an axle to make wheels work effectively, examines the mechanical advantages of using wheels, explains the concept of friction, and describes various wheeled machines.

Discusses the origins, development and different aspects of the popular musical style, known as rap.

A history of rock and roll music from its beginnings in rhythm and blues to the present day, including a discussion of the electric guitar, and rock star Elvis Presley.

Introduces the origins and elements of the musical styles known as jazz and the blues.

Discusses the popularity of traditional folk music, its styles, and musical instruments.

Brief text explores how music evolved from the baroque to the classical style, discussing instruments, famous composers, and the orchestra.

Presents an introduction to touring bikes, in simple text with illustrations, including information on gear, how to ride, fuel, comfort, and more.

Presents an introduction to drag racing motorcycles, in simple text with illustrations, including information on the different styles of bike, racing rules, top fuel dragsters, and more.