The shape of Earth's orbit around the sun and the orientation of its axis undergo regular variations over periods of thousands to millions of years. These variations—known as Milankovitch cycles after the Serbian geophysicist ...
Earth Sciences
May 31, 2019
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19
An international team led by geologist Michael Strasser has used novel methods to analyze sediment deposits in the Japan Trench in order to gain new insights into the carbon cycle.
Earth Sciences
Jan 10, 2018
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27
Humans have so profoundly altered the Earth that, some scientists argue, our current geologic epoch requires a new name: the Anthropocene. But defining the precise start of the era is tricky. Would it begin with the spread ...
Earth Sciences
Oct 25, 2017
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13
Humans migrated out of Africa as the climate shifted from wet to very dry about 60,000 years ago, according to research led by a University of Arizona geoscientist.
Earth Sciences
Oct 04, 2017
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Given Pennsylvania's abundant natural resources, it's no surprise that the Commonwealth has become a mecca for hydraulic fracturing. Researchers, however, have recently discovered that releasing millions of gallons of treated ...
Environment
Jul 19, 2017
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25
The Earth has known several mass extinctions over the course of its history. One of the most important happened at the Permian-Triassic boundary 250 million years ago. Over 95 percent of marine species disappeared and, up ...
Earth Sciences
Mar 06, 2017
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Protected areas not only keep significant swaths of Indonesia's shrinking mangrove habitats intact, but also prevent emissions of carbon dioxide that would have been released had these mangroves been cleared, according to ...
Environment
Sep 14, 2015
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21
The New Jersey shoreline that sea birds wandered during the last ice age is about 90 miles east of today's beaches, tens of meters beneath the sea floor. As the ice melted, sea level gradually rose and flooded the coastal ...
Earth Sciences
Aug 20, 2015
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42
Tsunamis triggered by the partial collapse of the Caribbean Monserrat volcano, 13,000 years ago, would have been much smaller than previously thought, according to research soon to be published in Geochemistry, Geophysics ...
Earth Sciences
Mar 13, 2015
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13
Starting in September 2013, the Baltic Sea will be the scene of a unique scientific expedition. The Integrated Ocean Drilling Program (IODP) will set out drilling deeper into Baltic Sea sediments than ever before, all the ...
Earth Sciences
Sep 06, 2013
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