Here’s what you’ll learn when you read this story: All life on Earth can be traced back to a last universal common ancestor (LUCA) that evolved some 4.2 billion years ago. While the true nature of ...

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 ...

All life on Earth shares a common ancestor that lived roughly four billion years ago. This so-called “last universal common ancestor” represents the most ancient organism that researchers can study.

All life on Earth shares a common ancestor that lived roughly four billion years ago. This so-called "last universal common ancestor" (LUCA) represents the most ancient organism that researchers can ...

Life’s story may stretch further back than scientists once thought. Some genes found in nearly every organism today were already duplicated before all life shared a common ancestor. By tracking these ...

Here’s what you’ll learn when you read this story: “While the last universal common ancestor is the most ancient organism we can study with evolutionary methods,” Aaron Goldman, lead author of the ...

All life on Earth can be traced back to a last universal common ancestor (LUCA) that evolved some 4.2 billion years ago. While the true nature of this organism—as well as the circumstances of its ...