A history of North America concentrating on European interests and rivalries and their influence on the development of the New World.

"The Caves of Steel" -- Science fiction suspense as New York City detective, Elijah Baley, and his partner, a robot named R. Daneel Olivaw, investigate the murder of Spacetown's leading scientist. "The Naked Sun" -- Detective Elijah Baley is sent from the streets of New York with his positronic partner, the robot R. Daneel Olivaw, to solve an incredible murder. A reclusive Solarian was killed by one of his robots, unthinkable under the Laws of Robotics....

Lucky Starr and his crew travel through space in pursuit of an enemy agent carrying a stolen capsule containing important information about Earth.

Presents the story of the Portuguese explorer who became the first European to cross the Pacific Ocean and whose expedition completed its voyage around the world after his death en route.

A brief discussion of sleep, why we need it, what happens when we sleep, and sleep disorders.

Describes the uses of the sun's energy from the time of the Greeks and Romans to the present day and discusses the potential of this source of energy in our modern world.