(PhysOrg.com) -- Until recently, researchers studying climate history in Brazil’s dry Nordeste region expected it to have wet and dry periods similar to the rest of South America. But over the past 9,000 years, the region ...
Earth Sciences
Feb 25, 2009
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New research shows that a remarkable defect in synthetic diamond produced by chemical vapor deposition allows researchers to measure, witness, and potentially manipulate electrons in a manner that could lead to new "quantum ...
Quantum Physics
Feb 4, 2014
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(PhysOrg.com) -- As energy consumption and greenhouse gas emissions continually rise in the United States, unconventional natural gas sources coupled with advances in carbon sequestration may be the solution, according to ...
Earth Sciences
Jul 14, 2009
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(Phys.org) —Researchers have called for a system of carbon emission assessments that reflect better the true contribution of each emitting nation to the increase in atmospheric CO2 and promote preservation of forests, particularly ...
Environment
Jul 16, 2013
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(PhysOrg.com) -- Much of our planet's mineral wealth was deposited billions of years ago when Earth's chemical cycles were different from today's. Using geochemical clues from rocks nearly 3 billion years old, a group of ...
Earth Sciences
Nov 19, 2009
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Human-induced changes to Earth's carbon cycle - for example, rising atmospheric carbon dioxide and ocean acidification - have been observed for decades. However, a study published this week in Science showed human activities, ...
Environment
Nov 27, 2014
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A superplume, or massive episode of volcanic eruptions that related to extensive melting of the Earth's mantle, could explain the puzzling reappearance of major iron formations long after the rise in atmospheric oxygen about ...
Earth Sciences
Apr 27, 2012
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Variations in the Earth's atmospheric oxygen levels are thought to be closely linked to the evolution of life, with strong feedbacks between uni- and multicellular life and oxygen. Over the past 400 million years the level ...
Earth Sciences
Aug 2, 2010
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Thirty-eight U.S. national parks are experiencing "accidental fertilization" at or above a critical threshold for ecological damage, according to a study published in the journal Atmospheric Chemistry and Physics and led ...
Environment
Oct 10, 2013
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Tiny sensors—made of a potentially trailblazing material just one atom thick and heralded as the "next best thing" since the invention of silicon—are now being developed to detect trace elements in Earth's upper atmosphere ...
Nanomaterials
Dec 5, 2012
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