A team of scientists has uncovered evidence that challenges the traditional view of the origins of life on Earth, suggesting that the first free-living cells may have emerged independently twice. This theory proposes that bacteria and archaea, two of the most ancient forms of life, developed separately from a common genetic code, paving the way for the diversity of life we see today.
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The research reveals that the earliest cells may have relied on metals in the environment to catalyze reactions, and that these primitive cells may have given rise to two distinct forms of life. The discovery of two origins of life on Earth opens up new avenues for research into the history of our planet and the evolution of life.
