Dossier
oxygen levels
Coverage of oxygen levels in the Nexus archive.
- 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.