The rise of oxygen in Earth’s early ocean and atmosphere

  title={The rise of oxygen in Earth’s early ocean and atmosphere},
  author={T. Lyons and C. Reinhard and N. Planavsky},
The rapid increase of carbon dioxide concentration in Earth’s modern atmosphere is a matter of major concern. But for the atmosphere of roughly two-and-half billion years ago, interest centres on a different gas: free oxygen (O2) spawned by early biological production. The initial increase of O2 in the atmosphere, its delayed build-up in the ocean, its increase to near-modern levels in the sea and air two billion years later, and its cause-and-effect relationship with life are among the most… Expand

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