Primary sources of revolutionary scientific discoveries and theories

Examines the life and works of seventeenth-century physicist, Isaac Newton, and discusses his laws of motion and universal gravitation as well as his influence on the world of science.

Examines the life and accomplishments of Charles Darwin, the nineteenth-century English scientist responsible for advancing theories about the survival of species and the origins of life, and includes a time line, and a selection of primary source transcriptions and images.

Examines the life and accomplishments of twentieth-century scientists James Watson, an American zoologist, and Francis Crick, an English chemist, the men responsible for cracking the genetic code and discovering the molecular structure of DNA, and includes a time line, and a selection of primary source transcriptions and images.