What is life?

What is life?. The song, "What is Life" was written by George Harrison. In his book, What is Life? (1945), Nobel laureate Erwin Schrödinger tries to answer the question in physical/chemical terms. The biophysicist Robert Rosen devoted his career to the question. Stuart Kauffman's book Investigations. Other related archivesErwin Schrödinger, George Harrison, Robert Rosen,

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Abiogenesis (Greek a-bio-genesis, "non biological origins") is, in its most general sense, the generation of life from non-living matter. Today the term is primarily used to refer to theories about the chemical origin of life, such as from a primordial soup. Earlier notions of abiogenesis, now more commonly known as spontaneous generation, held that living organisms are generated by decaying organic substances, e.g. that mice spontaneously appear in stored grain or maggots spontaneously appear in meat. (That idea, which ...

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• Abiogenesis - History of abiogenesis hypotheses
• Abiogenesis - Modern concept of abiogenesis
• Abiogenesis - Critics
• Abiogenesis - Schrödinger
• Abiogenesis - Yockey
• Abiogenesis - Panspermia advocates

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Aristotelian abiogenesis, also known as spontaneous generation, (and, in older texts, Generatio aequivoca, Generatio primaria, archegenesis, autogenesis, and archebiosis), was the theory according to which fully formed living organisms sometimes arise from not-living matter. Aristotle explicitly taught this form of abiogenesis, and laid it down as an observed fact that some animals spring from putrid matter, that plant lice arise from the dew which falls on plants, that fleas are developed from putrid matter, that ...

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Abiogenesis, Abiogenesis - History of abiogenesis hypotheses, Abiogenesis - Modern concept of abiogenesis, Abiogenesis - Critics, Abiogenesis - Schrödinger, Abiogenesis - Yockey, Abiogenesis - Panspermia advocates

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Main article: Origin of life Even as Aristotelian abiogenesis was being disproven, many scientists, such as T. H. Huxley, continued to postulate a "primordial archebiosis", in which the living organisms observed in the present world had originally arisen in a series of stages from non-living matter. (This hypothetical scenario is not greatly different from the original Aristotelian hypothesis, except in its frequency). Such scientists pointed out that the disproof of Aristotelian abiogenesis applied only to "known existing organisms", not to unknown forms of life or proto-life which may have exis ...

See also:

Abiogenesis, Abiogenesis - History of abiogenesis hypotheses, Abiogenesis - Modern concept of abiogenesis, Abiogenesis - Critics, Abiogenesis - Schrödinger, Abiogenesis - Yockey, Abiogenesis - Panspermia advocates

Read more here: » Abiogenesis: Encyclopedia II - Abiogenesis - Modern concept of abiogenesis