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 …

The endosymbiotic origin of mitochondria during eukaryogenesis has long been viewed as
an adaptive response to the oxygenation of Earth's surface environment, presuming a …

Abstract Large Igneous Provinces (LIPs) can have a significant global climatic effect as
monitored by sedimentary trace and isotopic compositions that record paleo …

We describe how environmental context can help determine whether oxygen (O2) detected
in extrasolar planetary observations is more likely to have a biological source. Here we …

Iron formations (IF) represent an iron-rich rock type that typifies many Archaean and
Proterozoic supracrustal successions and are chemical archives of Precambrian seawater …

Map** the history of atmospheric O2 during the late Precambrian is vital for evaluating
potential links to animal evolution. Ancient O2 levels are often inferred from geochemical …

The emergence and expansion of complex eukaryotic life on Earth is linked at a basic level
to the secular evolution of surface oxygen levels. However, the role that planetary redox …

The Viridiplantae comprise two main clades, the Chlorophyta (including a diverse array of
marine and freshwater green algae) and the Streptophyta (consisting of the freshwater …

The global biosphere is commonly assumed to have been less productive before the rise of
complex eukaryotic ecosystems than it is today. However, direct evidence for this assertion …

Few topics in geobiology have been as extensively debated as the role of Earth's
oxygenation in controlling when and why animals emerged and diversified. All currently …