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The End of the RNA World Is Near, Biochemists Argue
For decades, an origin-of-life story starring RNA has prevailed. New research may be shaking that theory’s hold on our understanding of life’s beginnings.
Life’s First Molecule Was Protein, Not RNA, New Model Suggests
Which mattered first at the dawn of life: proteins or nucleic acids? Proteins may have had the edge if a theorized process let them grow long enough to become self-replicating catalysts.