image: A rapid rise of oxygen in the Earth's atmosphere occurred 2.33 billion years ago, researchers report. This material relates to a paper that appeared in the May 13, 2016, issue of Science Advances, published by AAAS. The paper, by G. Luo at Massachusetts Institute of Technology in Cambridge, Mass., and colleagues was titled, "Rapid oxygenation of Earth's atmosphere 2.33 billion years ago." view more
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