Scienceblogtwo

When we breathe in, oxygen-containing air fills our lungs. This oxygen is then transferred to our red blood cells, which then carry it throughout our bodies. Our bodies require a lot of oxygen to function, and healthy people constantly have an oxygen saturation level of at least 95%. Ailments like COVID-19 and asthma make it more difficult for humans to absorb oxygen from the lungs. As a result, oxygen saturation levels fall to 90% or lower, signaling the need for medical intervention. Doctors use pulse oximeters at a clinic to keep an eye on oxygen saturation. The clips you place over your fingertip or ear are pulse oximeters. However, there may be advantages to regularly checking oxygen saturation at home. For instance, it might assist patients in monitoring COVID symptoms. Researchers from the Universities of Washington (UW) and California San Diego (UCSD) have demonstrated in a proof-of-concept study that cellphones are capable of detecting blood oxygen saturation levels as low as ...

Ocean oxygen can be reduced by continental movement. The positioning of continents, a previously unrecognized element, contributes to the oxygenation of Earth's waters. Moving continents might ultimately have the reverse result, killing most deep-sea animals. According to Andy Ridgwell, a geologist at the University of California, Riverside, "Continental drift appears so sluggish, like nothing terrible could come from it, but when the ocean is primed, even a seemingly insignificant event might spark the widespread extinction of marine life." A recent study on factors influencing oceanic oxygen is co-authored by Ridgwell. The ocean's surface water sinks as it gets colder and denser as it gets closer to the north or south pole. As the water sinks, oxygen drawn from the atmosphere of the planet is carried to the ocean floor. At Pearl and Hermes Atoll in the Papahnaumokukea Marine National Monument close to Hawaii, fish are seen on a deep reef. Thanks to Greg McFall and N...

Researchers have discovered an oxygen source that could have had an impact on the development of life before photosynthesis. Researchers at Newcastle University have identified an oxygen source located deep inside the Earth's crust that may have had an impact on the development of life before photosynthesis. The ground-breaking study discovered a mechanism that allows rocks to produce hydrogen peroxide when geological faults shift. The research, which was conducted by Newcastle University's School of Natural and Environmental Sciences, was released in the journal Nature Communications today, August 8. While hydrogen peroxide may be damaging to life at large quantities, microorganisms can benefit from it by using it as a source of oxygen. Before the development of photosynthesis, this extra supply of oxygen may have affected the early evolution of life in hot settings on the early Earth, and perhaps even its inception. Using vials in the lab, researchers were able to replicate s...