Get by with a little help from (old) friends

Researchers found chemical evidence that Ediacaran animals, living 635–540 million years ago, may have relied on sulfur-processing microbes much like modern deep-sea tube worms. The partnership detoxified toxic seafloor environments, suggesting microbial cooperation helped early multicellular life survive and diversify before the Cambrian explosion. Fossil chemistry offers new insight into a key evolutionary strategy.

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