Oldest fossils on Earth could be just rocks: NASA scientist
NASA scientist Abigail Allwood has claimed that Earth's oldest fossils believed to be 3.7 billion years old could just be rocks. Australian scientists had found structures called stromatolites in 2016 in Greenland that they said were leftovers from microbes which lived on the sea floor. After the new research, the Australian scientists still maintain that the structures were fossils.