(PhysOrg.com) -- The Earth's original atmosphere held very little oxygen. This began to change around 2.4 billion years ago when oxygen levels increased dramatically during what scientists call the "Great Oxidation Event." ...
Earth Sciences
Apr 8, 2009
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Red jasper cored from layers 3.46 billion years old suggests that not only did the oceans contain abundant oxygen then, but that the atmosphere was as oxygen rich as it is today, according to geologists.
Earth Sciences
Mar 24, 2009
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An international team of researchers, including a Northwestern University chemist, has discovered that metallic minerals on the deep-ocean floor produce oxygen—13,000 feet below the surface.
Earth Sciences
9 hours ago
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139
About 183 million years ago, volcanic activity in modern South Africa unleashed an estimated 20,500 gigatons of carbon dioxide (CO2) into the ocean–atmosphere system over a period of 300 to 500 thousand years. Known as ...
Earth Sciences
Jun 25, 2024
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Five hundred million years ago, the so-called Cambrian "SPICE" event made oxygen levels in the oceans drop dramatically.
Earth Sciences
Jun 21, 2024
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Researchers at Georgia Institute of Technology have finished investigating how the prehistoric weakening of a major ocean current led to a decline in ocean nutrients and negative impacts on North Atlantic ocean life. The ...
Earth Sciences
May 11, 2024
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Dr. Uri Ryb and Dr. Michal Ben-Israel from the Institute of Earth Sciences at the Hebrew University, along with their collaborators, have made an important discovery in Earth sciences. Their study, published in Nature Communications, ...
Earth Sciences
Apr 4, 2024
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Oxygen is fundamental to sustaining life on Earth. The ocean gets its oxygen from its uppermost layers in contact with the atmosphere. As our planet continues to warm, the ocean is gradually losing its capacity to absorb ...
Earth Sciences
Feb 15, 2024
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Decade-long ocean warming that impacts ocean circulation, a decrease in oxygen levels that contributes to changes in salinification and nutrient supply, and ocean acidification are just some of the challenges the world's ...
Earth Sciences
Dec 8, 2023
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A new study published in Applied and Environmental Microbiology provides the first characterization of the coral microbiome under hypoxia, insufficient oxygen in the water. The research is an initial step toward identifying ...
Ecology
Nov 2, 2023
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