The "How did we find out" series

Traces the development of scientific knowledge about the brain and how it works.

Traces the history of the computer, from the ancient abacus through the mechanical calculating machine to modern electronic technology.

Traces the scientific discoveries that led to our understanding of photosynthesis and how this process relates to the food supply, changing ecological balance, and threats to the Earth's atmosphere.

Describes the history of Pluto's discovery and what is known and unknown about the planet today.

Traces the development of scientific knowledge about the functions of blood in the body, from beliefs held by the ancient Greeks to discoveries in more modern times.

Traces the development of robots from the automatic clock to the microchip and discusses scientific and industrial uses of robots today.

Traces the scientific discoveries that led to our knowledge of the nature and substance of the sun.

Traces the scientific study of the speed of light, from Galileo's experiments in the seventeenth century to more recent discoveries involving the law of relativity.

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.