A new study reveals how oxygen first reached Earth’s oceans
Peer-Reviewed Publication
Updates every hour. Last Updated: 11-Dec-2025 07:11 ET (11-Dec-2025 12:11 GMT/UTC)
For roughly two billion years of Earth’s early history, the atmosphere contained no oxygen, the essential ingredient required for complex life. Oxygen began building up during the period known as the Great Oxidation Event (GOE), but when and how it first entered the oceans has remained uncertain.
A new study published in Nature Communications shows that oxygen was absorbed from the atmosphere into the shallow oceans within just a few million years—a geological blink of an eye. Led by researchers at Woods Hole Oceanographic Institution (WHOI), the work provides new insight into one of the most important environmental shifts in Earth’s history.
Tsinghua University Press is pleased to announce the official launch of Ocean (www.sciopen.com/journal/3008-1203), an international, peer-reviewed open-access journal dedicated to advancing research in ocean science, technology, and engineering.
Researchers have managed to speed up a natural process that normally takes thousands of years, creating a lab “machine” to capture carbon dioxide. A new study shows how limestone, dolomite, and seawater can be used as a natural carbon absorption system and could help reduce emissions from power plants in the future. By running CO₂ and seawater through columns filled with these common rocks, the team demonstrated a controllable way to lock carbon safely in dissolved form, rather than letting it escape into the air. The system already works but currently captures only part of the CO₂, leaving clear room – and a clear roadmap – for engineering improvements toward a practical, nature-based carbon capture technology.
A new University of Maryland study of campus air samples revealed that chemical compounds from Canada’s historic 2023 fires lingered in the air, forming an ‘atmospheric soup.’
Five LMU researchers have been awarded Consolidator Grants by the European Research Council. Their projects deal with climate change, strokes, quantum physics, mitochondria, and cancer diagnosis.