Underground Cells Make 'Dark Oxygen' Without Light

Exploring the discovery of underground cells that produce oxygen without light, challenging assumptions of oxygen deficiency in subterranean realms. Researchers analyze microbial communities in groundwater, finding surprising results. Dissolved oxygen in underground cells is discovered through mass spectrometry and genomics, with implications for subterranean ecosystems and the global environment. The presence of oxygen in underground ecosystems and its impact on productivity is examined, along with the significance of studying subsurface environments for potential extraterrestrial life.