How did we find out ... series

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.

Describes the discovery of life in the deep oceans and explains oceanography.

Describes scientists' attempts to find out how life began, including such topics as spontaneous generation and evolution.

Describes the origin, composition, and historical and modern uses of petroleum.

The phenomena of comets and astronomers' concepts about them are considered historically and in view of present knowledge.

Traces the work of many scientists over more than one hundred years in developing man's knowledge of nuclear power.

Traces man's knowledge and use of electricity from early Greek experiments to the invention of the telegraph, telephone, and electric light.

Traces the history of the study of early man and explains what this study has revealed about his roots.

Describes the geography of the Antarctic regions and the history of their discovery and exploration.

Traces the history of man's study of bacteria, and discusses what is currently known about bacteria, viruses, and innoculations against specific diseasecausing germs.