Charles Darwin and Alfred Russel Wallace simultaneously conceive the idea of natural selection.
Trapping the energy found in wind, sun, water and coal.
Einstein's theory of relativity redefines Newton's laws of gravity and motion.
In early civilizations the wheel represents poetry, science and the Earth as the center of the universe.
The regularities of nature lead to the definition of the Pythagorean theorems.
The discovery and use of fire defines the differences between materials and processes.
The responses of the Pueblos, Incas, Greeks, Romans and modern civilization to the discovery of nature.
The domestication of plant and animal life and the roots of warfare are studied in a look at the Bakhtiari tribe of Central Iran.
Evolution of the human brain and man's growth toward self-knowledge.
Identifying the gene, the structural basis of DNA and the theory of natural selection.
The ethics of science and theories of physics are applied to a general body of knowledge.
Efforts of 20th-century scientists to understand the structure of matter and fuse hydrogen.
Traces remnants of early man in southern Ethiopia to man's movements during the Ice Age.