Researchers find oxygen spike coincided with ancient global extinction
Two hundred fifty-two million years ago, much of life on planet Earth was dying.
Two hundred fifty-two million years ago, much of life on planet Earth was dying.
Earth Sciences
Aug 2, 2021
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Using new data from the James Webb Space Telescope, astronomers have measured the abundance of oxygen in the early universe. The findings, accepted for publication in The Astrophysical Journal Supplement Series and posted ...
Astronomy
Nov 9, 2023
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147
In the course of global climate change, scientists are observing the increase of low-oxygen areas in the ocean, also termed oxygen minimum zones (OMZs). Large-scale OMZs exist, for example, in the Pacific off the coast of ...
Cell & Microbiology
Aug 3, 2018
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66
UCLA astronomers have made the first accurate measurement of the abundance of oxygen in a distant galaxy. Oxygen, the third-most abundant chemical element in the universe, is created inside stars and released into interstellar ...
Astronomy
Aug 3, 2016
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1035
"Dwell fatigue" is a phenomenon that can occur in titanium alloys when held under stress, such as a jet engine's fan disc during takeoff. This peculiar failure mode can initiate microscopic cracks that drastically reduce ...
Condensed Matter
Nov 11, 2022
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109
Oxygen is the third most abundant element in the universe, after hydrogen and helium. It is an important constituent of the clouds of gas and dust in space, especially when combined in molecules with other atoms like carbon, ...
Astronomy
May 2, 2016
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821
(PhysOrg.com) -- Last Thursday, November 17, four unmanned Wave Gliders left the coast of San Francisco and began a 300-day journey across the Pacific Ocean. The vehicles, which are self-propelled and remotely piloted, will ...
(Phys.org) —Whether they are rocket propellants or fireworks, all explosives contain a fuel and an oxidizing agent. Sometimes both are in the same molecule, like in TNT; sometimes the explosive is a mixture, like Thermite. ...
Materials Science
Aug 14, 2013
2
1
A perfectly preserved turtle fossil from Lower Bavaria yields important clues about both the species and the habitat that existed in southern Germany 150 million years ago. The fossil is the best-preserved specimen of Solnhofia ...
Paleontology & Fossils
Jul 26, 2023
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242
Oxygen-starved ocean "dead zones," where fish and animals cannot survive, have been expanding in the open ocean and coastal waters for several decades as a result of human agricultural and industrial activity. Trying to predict ...
Earth Sciences
Oct 31, 2022
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101