Ancient 'Asgard' microbe may have used oxygen long before it was plentiful on Earth, offering new clue to origins of complex life
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Ancient 'Asgard' microbe may have used oxygen long before it was plentiful on Earth, offering new clue to origins of complex life

A new study suggests that ancient microbes once cast as oxygen haters may have actually learned to use the gas, offering a clue to how the first complex cells — and, eventually, all plants and animals — evolved.