oxygen levels
Coverage of oxygen levels in the Nexus archive.
- IVF embryos may thrive when grown with less oxygen
IVF embryos may develop better in lower oxygen environments, potentially reducing risks like low birth weight. Research suggests adjusting oxygen levels during IVF could improve outcomes for conceived embryos.
- Record fish kill reported in Sint Maarten as crews struggle to remove carcasses
Thousands of dead fish have been found in a canal in Sint Maarten, with officials struggling to clean up the largest recorded fish kill in the Dutch Caribbean territory. The Nature Foundation suspects a critical drop in oxygen levels caused the tilapia deaths and warns against consuming the fish.
- Want an oxygen-rich atmosphere? Stuff oxygen’s friends in the mantle.
Earth's oxygen-rich atmosphere developed over billions of years through a combination of biological and geological processes. A new study led by Wei Shi links changes in tectonic plate subduction to significant increases in atmospheric oxygen levels.
- Giant prehistoric insects didn’t need high oxygen after all, study finds
A new study challenges the long-held belief that high oxygen levels enabled the existence of giant prehistoric insects. Researchers found that insect flight muscles were not oxygen-constrained, and their respiratory systems had ample capacity for expansion. The study shifts focus to alternative explanations like predators or physical body limits for their giant forms.