Haze and planetary oxidation

A study combining Archean sulfur and carbon isotope data from the Griqualand West Basin in South Africa with photochemical simulations finds that, prior to permanent atmospheric oxygenation, the planet may have been episodically enshrouded in a short-lived hydrocarbon-rich haze requiring a sustained biological driver; the authors suggest that high levels of atmospheric methane could have expedited the escape of hydrogen from the upper atmosphere and played a pivotal role in planetary oxidation. - Read at PNAS

Article #16-18798: “Biological regulation of atmospheric chemistry en route to planetary oxygenation,” by Gareth Izon et al.