The complicated history of how the Earth’s atmosphere became breathable
Ars Technica,
Enlarge (credit: Aurich Lawson | Getty Images) The Great Oxygenation Event, which occurred around 2.4 billion years ago…
Enlarge (credit: Aurich Lawson | Getty Images) The Great Oxygenation Event, which occurred around 2.4 billion years ago…
Atmospheric oxygen is thought to have played a vital role in the evolution of complex multicellular organisms. The so-called…