In half of the twentieth century, Darwin (1809-1882) was criticized and ridicule from society because their revolutionary ideas published in his book "The Origin of Species." Although the 1 st edition (1859) was very popular, the society of the time did not give too much attention. Thanks to this work definitively established the theory of evolution. Darwin's work surpasses all previous publications on the evolution and 

The appearance of "The Origin of Species" was a scientific and cultural event, which caused a great scandal. There were many magazines and newspapers that published reviews and parodies of this work. Biologists were divided into two areas: Darwin's supporters and people who were against innovation. The English church was a great enemy of Darwin. The inclusion of man in his theory did Darwin come into conflict with conservative ideas and religion. Natural selection denied God, while the common image of the species was contradictory to the biblical account. At the time, Darwin's scientific arguments were of little weight was not until years later mucos when he began to recognize the importance of their discovery.

Darwin's work is twofold. On the one hand, the collection of a large number of paleontological and biological data from which it introduces the idea of evolution. On the other hand, the formulation of the theory of natural selection to explain the evolutionary process. The idea of evolution was accepted by biologists almost immediately, but the theory of natural selection was discussed from the beginning.

Thanks to Darwin, "The Origin of Species" caused a great revolution in biology.