Oxygen
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Want an oxygen-rich atmosphere? Stuff oxygen’s friends in the mantle.
A new study suggests that changes in the subduction of tectonic plates may be linked to increases in Earth's oxygen levels. This process, where plates sink into the Earth's interior, appears to correlate with the timing of oxygen jumps. The research indicates that the chemistry of the solid Earth played a role alongside biological processes in building up the oxygen-rich atmosphere.
Want an oxygen-rich atmosphere? Stuff oxygen’s friends in the mantle.
Planet Earth has some pretty great qualities going for it. (Negative reviews mostly revolve around the staff and clientele.) Pretty high on the list of positives is a richly oxygenated atmosphere. But that’s something that evolved and built up over a couple billion years, only eventually resulting in a world conducive to animal life like us. Scientists have many ideas about what could have caused oxygen to increase, and it seems that a number of them are probably correct.
In situ three-dimensional mapping of oxygen gradients in Staphylococcus epidermidis biofilms using a solution-based, ratiometric imaging platform
Staphylococcus epidermidis biofilm oxygen gradients are spatially mapped during biofilm development and after vancomycin treatment using a solution-based ratiometric imaging platform. By integrating the oxygen-sensitive, tris(2,2'-bipyridyl)dichlororuthenium(II) hexahydrate with oxygen-insensitive, water-soluble CdSe/ZnS quantum dots, we achieve in situ microscale resolution of dissolved oxygen (DO) concentrations within biofilms. The oxygen-sensing platform is calibrated within alginate...
Hidden store of manganese may have helped Earth get its oxygen
Deep below our feet, manganese may exist in a form we have never seen before, and this underground source of the metal could have played a role in the story of how Earth got its oxygen. Until about 2 billion years ago, Earth’s atmosphere barely contained any oxygen. Then came the Great Oxygenation Event (GOE) when oxygen produced by photosynthesizing microbes started to accumulate, spurring development of more diverse forms of life and changing the planet.
Mount Everest climber stranded for a week without food or oxygen rescued crawling back to Base Camp alone
Mount Everest climber stranded for a week without food or oxygen rescued crawling back to Base Camp alone Nepali guide Hillary Dawa Sherpa went missing near the so-called ‘Death Zone’ where oxygen levels are too low to sustain human life for long - Bookmark - CommentsGo to comments A Nepali climbing guide who went missing on Mount Everest a week ago without food or oxygen has been found alive, having crawled alone almost all the way back to Base Camp. Hillary Dawa Sherpa, 52, was discovered...
Chinese pupils seek oxygen therapy to boost memory, reduce anxiety for national exam
Chinese pupils seek oxygen therapy to boost memory, reduce anxiety for national exam Students flock to special chamber in hospitals to partake in ‘magic’ process ahead of vital test; doctors warn of potential health risks As China’s most important national examination, known as gaokao, looms, many students are flocking to hospitals to inhale oxygen in the belief that doing so will “recharge” their brains. Gaokao refers to the country’s national university entrance exam which takes place...
Rational engineering of facultative anaerobiosis enables commensal survival in the oxygenated gut
Life originated in the absence of oxygen. Despite its substantial energetic advantages, many modern microbes remain obligate anaerobes, confined to anoxic niches such as the mammalian gut. Why these organisms cannot tolerate oxygen has remained unresolved for more than two centuries.
Man presumbed dead survives week on Mount Everest without food or oxygen
Nepalese climbing guide survives week on Mount Everest without food or oxygen Thu 4 Jun 2026 at 10:51pm In short: A sherpa guide has survived nearly a week on Mount Everest without food or oxygen. Dawa Sherpa was last seen on May 29 after he failed to return to base camp with his Polish client. The guide's family said they had given up hope of finding him alive and were on the second day of a funeral ritual.
Quantitative profiling of JMJD6-catalysed lysine hydroxylation reveals residue-dependent oxygen sensitivity
Lysine hydroxylation is increasingly recognised as a widespread post-translational modification in human cells, with more than 100 modified sites identified to date. Jumonji domain-containing protein 6 (JMJD6) catalyses hydroxylation at multiple lysines within lysine-rich regions and is a major contributor to this modification across the proteome. As JMJD6 requires oxygen as a co-substrate, lysine hydroxylation has been proposed to couple oxygen availability to cellular function.
A Passive-Oxygenation Silicone Platform for Biomass Production: Maximizing Labor Productivity and Process Efficiency in Cellular Agriculture Development
The commercial production of cell-based food is currently hindered by existing bioreactor technologies, which require substantial capital investment, specialized operating skills, and complex processing setups. To democratize cell-based food production, we developed the "oxy-thru cultivator", a simple, autoclavable, closed-bag bioreactor fabricated from polydimethylsiloxane (PDMS). By leveraging the high oxygen-permeability of PDMS, this platform enables passive oxygenation across the entire...