Scientists find 3.7 billion-year-old fossil, oldest yet

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.
In a newly melted part of Greenland, Australian scientists found the leftover structure from a community of microbes that lived on an ancient seafloor, according to a study in Wednesday’s journal Nature.
The discovery shows life may have formed quicker and easier than once thought, about half a billion years after Earth