Oxygen Was Once A Sometime Thing on Earth

Riverside, Ca –

"An understanding of the history of Earth is incomplete without an understanding of how and why the planet developed an oxygenated atmosphere. A team of scientists, including Timothy Lyons, a distinguished professor of biogeochemistry, reports new isotopic data in Science Advances that illustrate how photosynthetic cyanobacteria temporarily spiked concentrations of oxygen around 2.5 billion years ago."

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