News tagged with geochemistry
International expedition investigates climate change, alternative fuels in Arctic
Space & Earth / Earth Sciences
Nov 20, 2009 |
3 / 5 (1) |
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Scientists from the Marine Biogeochemistry and Geology and Geophysics sections of the Naval Research Laboratory (NRL) organized and led a team of university and government scientists on an Arctic expedition ...
Unique Uranium Source in Naturally Bioreduced Sediment
Nov 18, 2009 |
4 / 5 (4) |
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(PhysOrg.com) -- A recently published Pacific Northwest National Laboratory study of a naturally bioreduced sediment sample from a former uranium mill tailings site reveals insights that enhance understanding ...
Deep-sea rocks point to early oxygen on Earth
Space & Earth / Earth Sciences
Mar 24, 2009 |
4.9 / 5 (14) |
1
Red jasper cored from layers 3.46 billion years old suggests that not only did the oceans contain abundant oxygen then, but that the atmosphere was as oxygen rich as it is today, according to geologists.
Search results for geochemistry
MESSENGER Spacecraft Flies by Mercury
Space & Earth / Space Exploration
Sep 30, 2009 |
4.7 / 5 (3) |
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Shortly before 5:55 p.m. EDT, MESSENGER skimmed 228 kilometers (141 miles) above the surface of Mercury in its third and final flyby of the planet.
Scientists Establish Connection Between Life Today and Ancient Changes in Ocean Chemistry
Space & Earth / Earth Sciences
Nov 07, 2006 |
3.6 / 5 (7) |
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Researchers in computational biology and marine science have combined their diverse expertise and found that trace-metal usage by present-day organisms probably derives from major changes in ocean chemistry occurring over ...
Phoenix Gets Bonus Soil Sample
Space & Earth / Space Exploration
Oct 20, 2008 |
3.5 / 5 (11) |
3
(PhysOrg.com) -- The Mars Phoenix Lander's robotic arm successfully delivered soil into oven six of the lander's thermal and evolved-gas analyzer (TEGA) on Monday, Oct. 13, or Martian day (sol) 137 of the ...
Arctic lake sediments show warming, unique ecological changes in recent decades
Space & Earth / Earth Sciences
Oct 19, 2009 |
4 / 5 (9) |
2
An analysis of sediment cores indicates that biological and chemical changes occurring at a remote Arctic lake are unprecedented over the past 200,000 years and likely are the result of human-caused climate ...
Free online activity explains MESSENGER spacecraft's Mercury flyby on Sept. 29
Space & Earth / Space Exploration
Sep 21, 2009 |
3 / 5 (3) |
1
(PhysOrg.com) -- NASA's MESSENGER spacecraft will fly past the planet Mercury on Sept. 29, and a free online simulator created by staff at Montana State University's Burns Technology Center helps explain how ...
Spacecraft Tandem Provide New Views of Venus
Space & Earth / Space Exploration
Jul 19, 2007 |
4.3 / 5 (7) |
0
NASA's Mercury Surface, Space Environment, Geochemistry, and Ranging spacecraft, known as Messenger, and the European Space Agency's Venus Express recently provided the most detailed multi-point images of ...
Carbon study could help reduce harmful emissions
Space & Earth / Earth Sciences
Feb 14, 2008 |
1.7 / 5 (3) |
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Earth scientists at The University of Manchester have found that carbon dioxide has been naturally stored for more than a million years in several gas fields in the Colorado Plateau and Rocky Mountains of the United States.
New Method of Studying Ancient Fossils Points to Carbon Dioxide As a Driver of Global Warming
Sep 17, 2007 |
3.1 / 5 (23) |
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A team of American and Canadian scientists has devised a new way to study Earth's past climate by analyzing the chemical composition of ancient marine fossils. The first published tests with the method further support the ...
Microbial cleaning of pollution is refined
Oct 19, 2005 |
not rated yet |
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University of Massachusetts-Amherst scientists say strategies using microbes to clean polluted sites are becoming more refined due to gene sequencing.
Acid rain has a disproportionate impact on coastal waters
Sep 08, 2007 |
4.1 / 5 (10) |
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The release of sulfur and nitrogen into the atmosphere by power plants and agricultural activities plays a minor role in making the ocean more acidic on a global scale, but the impact is greatly amplified ...
List of search results for geochemistry
