<< Scientists have found what they think is the oldest fossil on Earth, a remnant of life from 3.7 billion years ago when Earth's skies were orange and its oceans green. >>
<< The discovery shows life may have formed quicker and easier than once thought, about half a billion years after Earth formed. And that may also give hope for life forming elsewhere, such as Mars >>
Seth Borenstein. Scientists find 3.7 billion-year-old fossil, oldest yet. August 31, 2016.
AA << report evidence for ancient life from a newly exposed outcrop of 3,700-Myr-old metacarbonate rocks in the ISB (Isua supracrustal belt, southwest Greenland) that contain 1–4-cm-high stromatolites— macroscopically layered structures produced by microbial communities >>
Allen P. Nutman, Vickie C. Bennett, et al. Rapid emergence of life shown by discovery of 3,700-million-year-old microbial structures. Nature (2016) doi:10.1038/nature19355. Published online 31 August 2016.