Origin of Species

The Expression of the Emotions in Man and Animals is Charles Darwin's third major work of evolutionary theory, following On the Origin of Species, and The Descent of Man. In this book, Darwin sets out some early ideas about behavioural genetics, and explores the animal origins of such human characteristics as the lifting of the eyebrows in moments of surprise and the mental confusion which typically accompanies blushing.

In The Descent of Man Darwin applies evolutionary theory to human evolution, and details the theory of sexual selection, a form of biological adaptation distinct from, yet interconnected with, natural selection. The book discusses many related issues, including evolutionary psychology, evolutionary ethics, differences between human races, differences between sexes, the dominant role of women in mate choice, and the relevance of the evolutionary theory to society.

Darwin's most important work introducing the scientific theory that populations evolve over the course of generations through a process of natural selection. It presents a body of evidence that the diversity of life arose by common descent through a branching pattern of evolution. Darwin includes evidence that he had gathered on the Beagle expedition and his subsequent findings from research, correspondence, and experimentation. The book was written for non-specialist readers and attracted widespread interest upon its publication. As Darwin was an eminent scientist, his findings were taken seriously and the evidence he presented generated scientific, philosophical, and religious discussion.

Charles Darwin was twenty-two when he set off on the voyage of a lifetime aboard HMS Beagle. This book contains his journal with numerous observations including natural history, people, places. This journey took Darwin to the Galapagos, Australian coral reefs and many other corners of our planet shaping his ideas about evolution and subsequent work on the origin of species.