Asimov, Isaac

Traces the developing knowledge about heredity from the plant breeding experiments of Gregor Mendel to the use of x rays to produce mutations and the effect of natural mutations on the evolution of species.

Traces the history of man's study of earthquakes, discusses what is currently known about these tremors, and explores the possibility of their prevention.

Presents two short science fiction stories by Isaac Asimov, including "Robbie, " about a young girl whose robot playmate disappears when her mother decides it is time to make real friends; and "Sally, " the tale of a retired robotic car. Includes a biography of the author, and discussion topics.

Describes the significant events of science from 4,000,000 B.C. to the present and the effect of cultural, social, and political events.

Includes twelve tales involving young ghosts by a variety of authors.

Contains 15 short stories from the Black Widower series, 9 from the Union Club series, and 7 other stories which the author has selected as some of his best work.

Marlene, a fifteen-year-old Rotorian girl, learns of the threat Nemesis poses to the Earth and its people. She is stopped from warning Earth, but when she discovers Rotor is also in danger she knows she must save both Earth and Rotor from the death star, Nemesis.

Traces United States history from the Reconstruction through World War I.

Describes the comet's workings and wonders, how astronomers have unraveled some of the mysteries, lore of comets and scientific facts.