Tag Archives: Oxygen Catastrophe

This image is a high-resolution microscopic view of filamentary strands of cyanobacteria, observed through a green filter.
c. 2.5 Billion BCE: The Great Oxidation – A Transformative Event in Earth’s History

Explores the Great Oxidation, a pivotal event caused by the rise of oxygen-producing cyanobacteria, which significantly altered Earth's atmosphere and led to the extinction of many anaerobic species while paving the way for aerobic life [...]