Transition metal catalysts could be key to origin of life, scientists report

One of the big, unsolved problems in explaining how life arose on Earth is a chicken-and-egg paradox: How could the basic biochemicals—such as amino acids and nucleotides—have arisen before the biological catalysts (proteins or ribozymes) existed to carry out their formation? via Medical Daily: Transition metal catalysts could be key to origin of life, scientists report.