A "skillful, literate" (New York Times Book Review) biography of the persecuted genius who helped create the modern computer

To solve one of the great mathematical problems of his day, Alan Turing proposed an imaginary computer. Then, attempting to break a Nazi code during World War II, he successfully designed and built one, thus ensuring the Allied victory. Turing became a champion of artificial intelligence, but his work was cut short. As

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"An introduction to the life and thought of Kurt Godel, who transformed our conception of math forever"--Provided by publisher.

Traces the twenty-one-year period between Charles Darwin's original idea about natural selection and the publication of "On the Origin of Species, " in an account that offers insight into his experiences as a cautious naturalist.

Describes the invention and function of such things as a combine harvester, a laser, an electronic microscope, a missile, and plastic. Includes several related activities.

Explains the operation of common devices such as the doorbell, alarm clock, photocopier, radio, television, and computer; includes instructions for science experiments relating to these.

Traces the history of medicine from early surgery and the discovery of radioactivity to progress in modern medicines and genetic engineering. Includes some simple activities.