The earliest known evidence of photosynthetic structures has been identified inside a collection of the enigmatic cylindrical microfossils Navifusa majensis...
Around 2.4 billion years ago, the Great Oxidation Event caused fundamental changes to the chemistry of Earth’s surface environments. However, the effect...
Using a new gene-analyzing technique, researchers from MIT and elsewhere have found that all extant species of cyanobacteria can be traced back to a common...
Oxygen levels fluctuated dramatically for about 200 million years after the start of the Great Oxidation Event, with permanent atmospheric oxygenation...
An international research team led by a Princeton University scientist has found that the rise in oxygen that occurred about 2.3 billion years ago (Paleoproterozoic...
In the Archean Eon, more than 2.3 billion years ago, Earth’s atmosphere spent about a million years filled with a methane-rich haze; and this haze drove...
A group of researchers led by Prof J. William Schopf from the University of California, Los Angeles, has discovered a type of deep-sea microorganism that...
