buff.ly/2ZOLPGz⠀ Great Oxidation Event Contradiction Explained ⠀ ⠀ Earth hasn’t always been a habitable planet, at least not for life as we currently know it. Then about 2.4 billion years ago, something changed. That something is called the Great Oxidation Event, where global oxygen levels rose significantly, and it radically transformed both our atmosphere and our biosphere, making the diversity of life we have now possible.⠀ ⠀ And this event has always been something of a mystery because the evidence has contradictions. Now, in a new paper published in Science Advances, a team of scientists lays out how they may have solved the contradictions.⠀ ⠀ IMAGE: Artist’s rendition of what the Earth could have looked like in the Archean Eon, from 4 billion to 2.5 billion years ago. CREDIT: Peter Sawyer/Smithsonian Institution⠀ ⠀ #earth #climate #history #paleontology #geology #greatoxidationevent #oxidation #archean #science #scienceadvances #climatechange