The article mainly talks about when does life begin, which scientists are less surer about, compared with the time that the Earth came into being. The evidence for stromatolites last year suggests life began with photosynthesising bacteria 3.7 bilion years ago. But accordign to the evidence from the rocks found by Dr. Papineau and his team, which resembles the networks of bacteria living in hydrothermal vent, a plausible candidate for the cradle of life, life might begin even earlier, between 3.8 and 4.3 bilion years ago. Although the evidence is not conclusive, the finding is rather intruging. If confirmed, it can bring about other important implications. The earlist life was sustained not by photosynthesis but by the energy from the reactions between the dissolved chemicals that well up from the crust since sunlight could not penetrate so deep in the oceans. Alongside that, if the Earth began host life within its early stage of formation is firmed, it wll futher cause the argumentation about whether life is an inevitable and common consequence of the law of the chemistry or a lucky one-off only on Earth.
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