Scientists have just unearthed what they claim to be the oldest fossils ever found on our planet. They're so ancient they predate the next oldest finds by roughly a quarter-billion years. These newly uncovered fossils are 3.7-billion-year -old traces of ancient microbes, and were found under recently melted perennial snow in southwest Greenland. The fossils were discovered by a team of geologists and paleontologists led by Allen Nutman at the University of Wollongong in Australia.
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