Scientists reveal new clues into how Earth got its oxygen

For much of Earth's four and a half billion years, the planet was barren and inhospitable; it wasn't until the world acquired its blanket of oxygen that multicellular life could really get going. But scientists are still trying to understand exactly how—and why—our planet got this beautifully oxygenated atmosphere.

from Phys.org - latest science and technology news stories https://ift.tt/3jsAUGD

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