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Oparin and Haldane suggested that the atmosphere of the early Earth may have been chemically reducing in nature, composed primarily of methane (CH 4), ammonia (NH 3), water (H 2 O), hydrogen sulfide (H 2 S), carbon dioxide (CO 2) or carbon monoxide (CO), and phosphate (PO 4 3−), with molecular oxygen (O 2) and ozone (O 3) either rare or absent.
Primordial soup, also known as prebiotic soup, is the hypothetical set of conditions present on the Earth around 3.7 to 4.0 billion years ago. It is an aspect of the heterotrophic theory (also known as the Oparin–Haldane hypothesis) concerning the origin of life, first proposed by Alexander Oparin in 1924, and J. B. S. Haldane in 1929.
[citation needed] In addition, he has been a member of several advisoryand review boards of scientific organizations, such as NASA, where he was a member of the NASA Astrobiology Institute [3] He served as president of the International Society for the Study of the Origin of Life , for two terms, [ 4 ] and is also the first Latin American ...
The Origin and Nature of Life on Earth: The Emergence of the Fourth Geosphere (2016) is a book by Eric Smith and biophysicist Harold J. Morowitz which provides an introduction to origins of life research via a review of perspectives from a variety of fields active in this research area, including geochemistry, biochemistry, ecology, and microbiology.
Research concerning the relationship between the thermodynamic quantity entropy and both the origin and evolution of life began around the turn of the 20th century. In 1910 American historian Henry Adams printed and distributed to university libraries and history professors the small volume A Letter to American Teachers of History proposing a theory of history based on the second law of ...
The journal's scope includes research on the origin, evolution, distribution, and future of life on Earth and beyond. Some examples of areas of interest are: prebiotic chemistry and the nature of Earth's early environment, self-replicating and self-organizing systems, the RNA world hypothesis and of other possible precursor systems, and the ...
Experimentalists used a variety of terms for the study of the origin of life from nonliving materials. Heterogenesis was applied to the generation of living things from once-living organic matter (such as boiled broths), and the English physiologist Henry Charlton Bastian proposed the term archebiosis for life originating from non-living materials.
Günter Wächtershäuser (born 1938 in Gießen) is a German chemist turned patent lawyer who is widely known for his work on the origin of life, and in particular his iron-sulfur world theory, a theory that life on Earth has hydrothermal origins.