Oxygen in the atmosphere and ocean rose dramatically about 600 million years ago, coinciding with the first proliferation of animal life. Since then, numerous short lived biotic events—typically marked by significant climatic ...
Earth Sciences
Oct 28, 2013
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Cosmochemists have solved a long standing mystery in the formation of the solar system: Oxygen, the most abundant element in Earth's crust, follows a strange, anomalous pattern in the oldest, most pristine rocks, one that ...
Earth Sciences
Oct 24, 2013
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A common songbird may have acquired genes from fellow migrating birds in order to travel greater distances, according to a University of British Columbia study published this week in the journal Evolution.
Evolution
Sep 20, 2013
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(Phys.org) —A period of rapid, intense cooling, known as the Younger Dryas, took place about 13,000 years ago. Scientists think this sudden change in climate caused the extinction of many large mammals, such as the mammoth, ...
Far more of Earth's water was locked up as ice at the height of the last ice age than previously thought, and current climate change models may need to be adjusted to account for it, according to a new study.
Earth Sciences
Jun 28, 2013
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As ice sheets melted during the deglaciation of the last ice age and global oceans warmed, oceanic oxygen levels decreased and "denitrification" accelerated by 30 to 120 percent, a new international study shows, creating ...
Earth Sciences
Jun 3, 2013
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(Phys.org) —A pair of Australian researchers studying rock samples has found evidence to suggest that the Earth's tectonic plate activity peaked approximately 1.1 billion years ago. In their paper published in the journal ...
A research team of biogeochemists at the University of California, Riverside has provided a new view on the relationship between the earliest accumulation of oxygen in the atmosphere, arguably the most important biological ...
Earth Sciences
Apr 24, 2013
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Scientists have long believed that lava erupted from certain oceanic volcanoes contains materials from the early Earth's crust. But decisive evidence for this phenomenon has proven elusive. New research from a team including ...
Earth Sciences
Apr 24, 2013
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(Phys.org)—Changes in agricultural practices could reduce soil emissions of the greenhouse gas nitrous oxide and the atmospheric pollutant nitric oxide, according to a new study by scientists at the University of California, ...
Environment
Apr 2, 2013
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