Glycerol dialkyl glycerol tetraether (GDGT) lipids are membrane lipids which were long
thought to be synthesized mainly by archaea, organisms thought to be limited to extreme …

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

Eukaryotic life appears to have flourished surprisingly late in the history of our planet. This
view is based on the low diversity of diagnostic eukaryotic fossils in marine sediments of mid …

The origin of oxygenic photosynthesis was the most important metabolic innovation in Earth
history. It allowed life to generate energy and reducing power directly from sunlight and …

Water plays a critical role in erosion and sediment transport and this relationship is most
evident in the hyperarid Atacama Desert of Northern Chile, a region characterized by …

The evolution and extinction of life are tied intimately to the oxygen state of the ocean, and
particularly to the presence of anoxic and H2S-containing (euxinic) water on a global scale …

Lipid molecules are organic compounds, insoluble in water, and based on carbon-carbon
chains that form an integral part of biological cell membranes. As such, lipids are ubiquitous …

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 …

Significant links exist between the sulfur cycle, sulfur geochemistry of sedimentary systems,
and ore deposits over the course of Earth history. A picture emerges of an Archean and …

A comprehensive organic geochemical investigation of the Hawsker Bottoms outcrop
section in Yorkshire, England has provided new insights about environmental conditions …