An analysis of sulfide ore deposits from one of the world's richest base-metal mines confirms that oxygen levels were extremely low on Earth 2.7 billion years ago, but also shows that microbes were actively feeding on sulfate ...
Earth Sciences
Dec 10, 2012
2
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Global temperatures directly affect the acidity of the ocean, which in turn changes the acoustical properties of sea water. New research suggests that global warming may give Earth's oceans the same hi-fi sound qualities ...
Earth Sciences
Oct 18, 2012
16
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Scientists have created a more accurate history of how Earth's climate has varied over the last 1.5 million years, after developing a new method that lets them draw on natural temperature records that have never before been ...
Earth Sciences
Oct 11, 2012
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(Phys.org)—Using a combination of traditional and innovative model-building techniques, scientists in the U.S. and a specialist in Denmark have created a lifelike reconstruction of an ancient mollusk, offering a vivid portrait ...
Archaeology
Sep 19, 2012
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1.5 million years of climate history revealed after scientists solve mystery of the deep Study successfully reconstructed temperature from the deep sea to reveal how global ice volume has varied over the glacial-interglacial ...
Earth Sciences
Aug 9, 2012
11
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Debate over the origin of large-scale polygons (hundreds of meters to kilometers in diameter) on Mars remains active even after several decades of detailed observations. Similarity in geometric patterns on Mars and Earth ...
Space Exploration
Jul 27, 2012
3
0
No matter how well adapted an animal may be, it can spell evolutionary doom to have feathers or even shells that become coveted by human beings. Take the nautilus, a creature that pulled easily through the asteroid impact ...
Archaeology
Jul 23, 2012
0
1
A rare kind of mineral which scientists hope could be used to remove toxic metals and radioactive species from the environment played a similar, crucial role early in Earth's history.
Earth Sciences
Jun 26, 2012
2
0
Until now, studies of Earth's climate have documented a strong correlation between global climate and atmospheric carbon dioxide; that is, during warm periods, high concentrations of CO2 persist, while colder times correspond ...
Earth Sciences
Jun 6, 2012
12
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In a new study reported in Nature, climate scientist Rob DeConto of the University of Massachusetts Amherst and colleagues elsewhere propose a simple new mechanism to explain the source of carbon that fed a series of extreme ...
Earth Sciences
Apr 4, 2012
47
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