The atmosphere of the Archean eon—one-third of Earth's history—is important for
understanding the evolution of our planet and Earth-like exoplanets. New geological proxies …

Cyanobacteria are the only prokaryotes to have evolved oxygenic photosynthesis,
transforming the biology and chemistry of our planet. Genomic and evolutionary studies …

The long history of life on Earth has unfolded as a cause-and-effect relationship with the
evolving amount of oxygen (O2) in the oceans and atmosphere. Oxygen deficiency …

Fossilized lipids preserved in sedimentary rocks offer singular insights into the Earth's
palaeobiology. These 'biomarkers' encode information pertaining to the oxygenation of the …

Photosystem II is the water-oxidizing and O2-evolving enzyme of photosynthesis. How and
when this remarkable enzyme arose are fundamental questions in the history of life that …

Cyanobacteria played an important role in the evolution of Early Earth and the biosphere.
They are responsible for the oxygenation of the atmosphere and oceans since the Great …

Production of molecular oxygen was a turning point in the Earth's history. The geological
record indicates the Great Oxidation Event, which marked a permanent transition to an …

Oxygenic photosynthesis supplies organic carbon to the modern biosphere, but it is
uncertain when this metabolism originated. It has previously been proposed, that …

Oxygenic photosynthesis is arguably the most important biological innovation in Earth's
history, facilitating the transition to a habitable planet for complex life. Dating the emergence …

The record of the coevolution of oxygenic phototrophs and the environment is preserved in
three forms: genomes of modern organisms, diverse geochemical signals of surface …