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All life on Earth can be traced back to a Last Universal Common Ancestor, or LUCA. A new study suggests that this organism likely lived on Earth only 400 million years after its formation. Further ...

Four billion years ago, Earth was violent, hot, and unstable. Yet new research suggests that by then, life had already reached a surprising level of complexity. At that time lived the last universal ...

Imagine the tree of life. The tip of every branch represents one species, and if you follow any two branches back through time, you'll hit an... Life as we know it descended from a single cell. What ...

New findings published in Nature Ecology & Evolution have pushed back Last Universal Common Ancestor’s—known as LUCA — timeline by hundreds of millions of years, reshaping our understanding of life’s ...