(Phys.org) —A lot can happen to a rock over the course of two and a half billion years. It can get buried and heated; fluids remove some of its minerals and precipitate others; its chemistry changes. So if you want to use ...
Earth Sciences
Apr 11, 2014
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The water budget of the troposphere, the bottom layer of the Earth's atmosphere, determines the weather and plays a central role in climate change. The isotope composition of water vapor, i.e. the ratio of light and heavy ...
Earth Sciences
Sep 9, 2013
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The end of the last Ice Age was preceded by a gradual rise in atmospheric CO2. A new study supports the idea that a shift in the position, and increase in the intensity, of zonal westerly winds in the Southern hemisphere ...
Earth Sciences
Aug 7, 2013
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University of Colorado meteorologist David Noone and his team are working to understand how water moves around the planet. With support from the National Science Foundation (NSF), the project team observes and analyzes the ...
Earth Sciences
Jun 25, 2013
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Despite upgrades to technology and ore management techniques, new and compelling research shows that the combined effects of historic and contemporary emissions are the definitive cause of environmental lead contamination ...
Environment
Jun 17, 2013
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Variations in the ratios of different isotopes of hydrogen and oxygen in water have long been used to trace water cycle processes, and the isotopic composition of water vapor in the atmosphere is known to change with weather ...
Earth Sciences
May 28, 2013
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A new study by scientists at Duke University and the U.S. Geological Survey (USGS) finds no evidence of groundwater contamination from shale gas production in Arkansas.
Environment
May 15, 2013
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(Phys.org) —It's a bit like learning the secrets of the family that lived in your house in the 1800s by examining dust particles they left behind in cracks in the floorboards.
Astronomy
Apr 19, 2013
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Dissolved organic matter in streams and rivers can be broken down by sunlight or bacteria, providing a fuel source for aquatic ecosystems and affecting carbon dioxide and carbon monoxide concentrations as the organic matter ...
Environment
Apr 15, 2013
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Levels of carbon dioxide rose hand-in-hand with warming at the end of the last Ice Age, according to a study Thursday that deals a blow to climate skeptics.
Earth Sciences
Feb 28, 2013
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