Image of the Hawaiian volcano lava of Kilauea in Hawaii. (Photo: EFE) CLASSICAL REVIEW OF THEORY
Tan simple as convincing.
The experiment that a scientist at the University of Chicago named Stanley Miller played over and over again in the laboratory more than half a century continues today explaining the possible origins of life on Earth.
A historical and study published in 'Science' in 1953, showed how the components from the initial atmosphere, the amino acids could emerge as the key to the formation of life.
had not known and accessible ingredients for that "primordial soup" as described by Darwin: methane, hydrogen, ammonia, water and electricity.
Miller's experiment, now common in chemistry classes of the institutes, was to bring together all these ingredients and discharge electricity, thus simulating the ocean, atmosphere and the rays of 4,500 million years ago.
The result was a soup of amino acids. A simple experiment was successful in creating 13 of the 21 amino acids necessary for life. The famous astrophysicist Carl Sagan considered "the most significant step to convince scientists that life may be abundant in the cosmos."
Fifty-five years later, the same journal 'Science' published a review of the experiment. Jeffrey Bada of the Scripps Institution of Oceanography at the University of California at San Diego, and colleagues have reinterpreted the analysis of Miller to conclude that the major components of life could come from volcanic eruptions.
A historical and study published in 'Science' in 1953, showed how the components from the initial atmosphere, the amino acids could emerge as the key to the formation of life.
had not known and accessible ingredients for that "primordial soup" as described by Darwin: methane, hydrogen, ammonia, water and electricity.
Miller's experiment, now common in chemistry classes of the institutes, was to bring together all these ingredients and discharge electricity, thus simulating the ocean, atmosphere and the rays of 4,500 million years ago.
The result was a soup of amino acids. A simple experiment was successful in creating 13 of the 21 amino acids necessary for life. The famous astrophysicist Carl Sagan considered "the most significant step to convince scientists that life may be abundant in the cosmos."
Fifty-five years later, the same journal 'Science' published a review of the experiment. Jeffrey Bada of the Scripps Institution of Oceanography at the University of California at San Diego, and colleagues have reinterpreted the analysis of Miller to conclude that the major components of life could come from volcanic eruptions.
More amino
During these decades, several evidences have questioned the validity of the atmosphere recreated by Miller (there are doubts that it would be so reductive, ie oxygen-poor). However, the new experiment carried out by Bada suggests that "even if the overall atmosphere was not reducing, could have been a localized prebiotic synthesis" in volcanic systems, the study said.
Earth is believed that, originally, was a turbulent world, shaken by volcanic activity. The current study suggests that lightning and gases emissions resulting from volcanic eruptions could produce the chemicals necessary for life. Returning to the experiment with contemporary techniques, researchers have created a total of ... 22 amino acids!
After testing, the authors of the study released today, reported that "the steam [ejected by volcanoes], injecting a spark [power], may have generated hydroxy radicals or react with the precursors of amino acids or amino acids themselves. "
After Miller's death in 2007, Bada, and veteran, and his colleagues rescued the original chemical samples that "primordial soup." "We were sure that there were still things to discover in Miller's original experiment, "Bada said study co-author." We realized that a modern version "of volcanic systems testing" produces a wider variety of components. "
During these decades, several evidences have questioned the validity of the atmosphere recreated by Miller (there are doubts that it would be so reductive, ie oxygen-poor). However, the new experiment carried out by Bada suggests that "even if the overall atmosphere was not reducing, could have been a localized prebiotic synthesis" in volcanic systems, the study said.
Earth is believed that, originally, was a turbulent world, shaken by volcanic activity. The current study suggests that lightning and gases emissions resulting from volcanic eruptions could produce the chemicals necessary for life. Returning to the experiment with contemporary techniques, researchers have created a total of ... 22 amino acids!
After testing, the authors of the study released today, reported that "the steam [ejected by volcanoes], injecting a spark [power], may have generated hydroxy radicals or react with the precursors of amino acids or amino acids themselves. "
After Miller's death in 2007, Bada, and veteran, and his colleagues rescued the original chemical samples that "primordial soup." "We were sure that there were still things to discover in Miller's original experiment, "Bada said study co-author." We realized that a modern version "of volcanic systems testing" produces a wider variety of components. "
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