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Scientists uncover oxygen-loving ancestor of all complex life
General • February 19, 2026
For
decades,
scientists have
believed that
complex life began when two very
different microbes joined forces, eventually giving rise to plants, animals, and fungi. But one major puzzle remained: how could these organisms have met if one depended on oxygen and the other supposedly lived without it? New research suggests the answer lies in ancient microbes called Asgard archaea.
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