Fossilized Molecules Reveal a Lost World of Ancient Life

A tree has something in common with the weeds and mushrooms growing around its roots, the squirrels scurrying up its trunk, the birds perched on its branches, and the photographer taking pictures of the scene. They all have genomes and cellular machinery neatly packed into membrane-bound compartments, an organizational system that places them in an immensely successful group of life forms called…

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