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From PhysOrg.com:
A major mystery about the origins of life has been resolved. According to a study published in the journal Nature, two Université de Montréal scientists have proposed a new theory for how a universal molecular machine, the ribosome, managed to self-assemble as a critical step in the genesis of all life on Earth.
From PhysOrg.com:
...scientists have synthesized for the first time RNA enzymes that can replicate themselves without the help of any proteins or other cellular components, and the process proceeds indefinitely.
Why Life Originated (And Why it Continues) from PhysOrg.com
(PhysOrg.com) -- Today, scientists understand pretty well how life evolves, by mechanisms based on Darwin’s theory of natural selection for survival of the fittest. However, Darwin’s 1859 classic, On the Origin of Species, somewhat ironically doesn’t answer that very question – how species actually originated. And to this day, how that first tiny pool of chemicals twitched to life remains a puzzle.
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Scientists Automate Molecular Evolution from PhysOrg.com
Under the control of a computer at The Scripps Research Institute, a population of billions of genes morphed through 500 cycles of forced adaptation to emerge as molecules that could grow faster and faster on a continually dwindling source of chemical fuel -- a feat that researchers describe as an example of "Darwinian evolution on a chip."
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Scientists propose the kind of chemistry that led to life from PhysOrg.com
Before life emerged on earth, either a primitive kind of metabolism or an RNA-like duplicating machinery must have set the stage – so experts believe. But what preceded these pre-life steps?
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