Research by a University of Minnesota Duluth (UMD) graduate student Mojtaba Fakhraee and Associate Professor Sergei Katsev has pushed a major milestone in the evolution of the Earth's environment back by about 250 million ...
Earth Sciences
Jan 25, 2018
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Scientists know that atmospheric oxygen irreversibly accumulated on Earth around 2.3 billion years ago, at a time known as the Great Oxidation Event, or GOE. Prior to that time all life was microbial, and most, if not all, ...
Earth Sciences
Jun 6, 2017
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Dramatic drops in oceanic oxygen, which cause mass extinctions of sea life, come to a natural end - but it takes about a million years.
Earth Sciences
May 12, 2017
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A low level of atmospheric oxygen in Earth's middle ages held back evolution for 2 billion years, raising fresh questions about the origins of life on this planet.
Earth Sciences
Feb 2, 2017
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(Phys.org)—A small team of researchers in the U.S. has found evidence in rock samples that suggests that oxygen levels during the Lomagundi Event were high enough to support the advancement of life on Earth. In their paper ...
For the development of animals, nothing—with the exception of DNA—may be more important than oxygen in the atmosphere.
Earth Sciences
Jan 2, 2017
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The evolution of the first land plants including mosses may explain a long-standing mystery of how Earth's atmosphere became enriched with oxygen, according to an international study led by the University of Exeter.
Earth Sciences
Aug 15, 2016
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Earth's early burrowers were slow to discover the bottom of the ocean as a good place to kick up dirt.
Earth Sciences
Sep 29, 2015
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67
Seafloor sediment cores reveal abrupt, extensive loss of oxygen in the ocean when ice sheets melted roughly 10,000-17,000 years ago,according to a study from the University of California, Davis. Thefindings provide insight ...
Earth Sciences
Jan 28, 2015
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Scientists investigating one of the greatest riddles of the Earth's past may have discovered a mechanism to help determine how oxygen levels in the atmosphere expanded to allow life to evolve.
Earth Sciences
Jun 9, 2014
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