The Ancestor of Everything
The search for our origins go back to a single common ancestor– one that remains shrouded in mystery. It’s the ancestor of everything we know and today scientists call it the last universal common ancestor, or LUCA. If you trace all the branches on the tree of life backward, you realize that they come from the same trunk, that initial point that’s the first species. Darwin theorized that such a thing did live, calling it, “the primordial form into which life first breathed.” PBS Eons host Hank Green digs further into our journey of the origins of life.
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