Ancient die-off greater than the dinosaur extinction

Clues from Canadian rocks formed billions of year ago reveal a previously unknown loss of life even greater than that of the mass extinction of the dinosaurs 65 million years ago, when Earth lost nearly three-quarters of ...

Early life on Earth limited by enzyme

The enzyme-nitrogenase-can be traced back to the universal common ancestor of all cells more than four billion years ago.

Earth's oxygen increased in gradual steps rather than big bursts

A carbon cycle anomaly discovered in carbonate rocks of the Neoproterozoic H├╝ttenberg Formation of north-eastern Namibia follows a pattern similar to that found right after the Great Oxygenation Event, hinting at new evidence ...

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