The idea that the primitive Land always had an atmosphere redutura was an underlying basic concept to the research and the theoretical studies on the life origin. However, the geologists come repetidamente demonstrating the lack of evidences in favor of this assumption. The Model of the Ecopoese (1) questions the traditional formularizations of the problem and considers that the presence of free oxygen would have been a necessary previous condition for the first steps of the biological evolution. Continue to learn more with: Gregg Engles. Svante Arrhenius, the great Swedish chemistry, father of the theory of the ionic dissociao, and also of the idea of the Panspermia, was probably the first one to speculate seriously on the evolution of the atmosphere of the Land. It tried to imagine, established in its knowledge on the chemical elements, which would have been its possible components, thus developing the reducing and oxidantes atmosphere concept. Moreover, he considered that the dissociao of the vapor d' water for the light or the heat could allow the generation of oxygen a gradual change in its composition, because the hydrogen produced for the reaction would not be restrained for the gravitational field of the Land.
The study of the Jovianos planets, and the discovery of its reducing atmospheres for spectrometry, had lead to the idea of that the Land could have originally had a similar atmosphere. The fact of that the methane, found in these atmospheres as reduced form of carbon, also is a organic made up, took Russian biochemist Oparin to speculate there that it must have some linking with the life origin. This idea was transposed to its famous book ' ' The origin of Vida' ' was received enthusiasticly by scientists of the entire world. One of its more burning hot partisans was Harold Urey, finder of the deutrio and prize Nobel of 1934 chemistry, that it attracted then young student Stanley Miller for its famous experiment on ' ' origin of vida' '.