Oldest Fossils Ever Found Give New Clues to Life’s Origins

Four billion years ago, as a faint young sun beat down on the newly-formed Earth, a cluster of creatures—each less than half the width of a human hair—were already thriving around volcanic vents.

In a study published Wednesday in Nature, researchers say they’ve found the microfossil remnants of organisms that, if confirmed, lived at least 3.77 billion years ago.

The findings add a new puzzle piece for researchers trying to travel backward along the tree of life seeking the so-called La

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