Beginning with the first one-celled organisms, a world-famous biologist explains the evolutionary process-the adaptation and specialization of species, genetic structure, natural selection, heredity, mutations, the appearance of new capacities such as flying and walking.
Dr. Huxley views the myriad forms of life as they struggle to survive across geological time, and charts the biological improvements that resulted finally in a species of vertebrates who acquired the power to reason. Here is a concise, invigorating description of man's progress toward his rational, human nature.. . and a provocative speculation on his future possibility.