 Tidal motion influences Antarctic ice sheet December 20, 2006 | User rating: 4.1 / 5 after 9 vote(s)
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New research into the way the Antarctic ice sheet adds ice to the ocean reveals that tidal motion influences the flow of the one of the biggest ice streams draining the West Antarctic Ice Sheet. | |
 Microbe fixes nitrogen at a blistering 92 C December 14, 2006 | User rating: 4.5 / 5 after 20 vote(s)
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A heat-loving archaeon capable of fixing nitrogen at a surprisingly hot 92 degrees Celsius, or 198 Fahrenheit, may represent Earth’s earliest lineages of organisms capable of nitrogen fixation, perhaps even ... | |
 Ancient climate change may portend toasty future December 07, 2006 | User rating: 4.1 / 5 after 37 vote(s)
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Scientists, including Ken Caldeira of the Carnegie Institution’s Department of Global Ecology, have found that the Earth’s global warming, 55 million years ago, may have resulted from the climate’s high sensitivity ... | |
 Hotspots or not? Isotopes score one for traditional theory December 06, 2006 | User rating: 4.2 / 5 after 13 vote(s)
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New chemical evidence sheds light on the physical constraints of 'hotspots' -- locations where upwellings of Earth's mantle material form seamounts and island chains. Although the existence of hotspots has ... | |
Scientists Want to Solve Puzzle of Excess Water Vapor Near Cirrus Clouds November 30, 2006 | User rating: 4.2 / 5 after 27 vote(s)
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A number of researchers in recent years have reported perplexing findings of water vapor at concentrations as much as twice what they should be in and around cirrus clouds high in the atmosphere, a finding that could alter ... | |
Geobiologists Solve 'Catch-22 Problem' Concerning the Rise of Atmospheric Oxygen November 29, 2006 | User rating: 4.2 / 5 after 43 vote(s)
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Two and a half billion years ago, when our evolutionary ancestors were little more than a twinkle in a bacterium's plasma membrane, the process known as photosynthesis suddenly gained the ability to release molecular oxygen ... | |
Evidence from Hawaiian volcanoes shows that Earth recycles its crust November 29, 2006 | User rating: 3.9 / 5 after 25 vote(s)
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A geologist at Rutgers, The State University of New Jersey, has come up with evidence our planet practices recycling on a grand scale. | |
New Study Finds that Single Impact Killed Dinosaurs November 28, 2006 | User rating: 4.2 / 5 after 56 vote(s)
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The dinosaurs, along with the majority of all other animal species on Earth, went extinct approximately 65 million years ago. Some scientists have said that the impact of a large meteorite in the Yucatan Peninsula, in what ... | |
Resilient Form of Plant Carbon Gives New Meaning to Term ‘Older than Dirt’ November 23, 2006 | User rating: 4.6 / 5 after 33 vote(s)
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A particularly resilient type of carbon from the first plants to regrow after the last ice age – and that same type of carbon from all the plants since – appears to have been accumulating for 11,000 years in the forests of ... | |
 Seismolgists get handle on heat flow deep in Earth November 23, 2006 | User rating: 4.6 / 5 after 42 vote(s)
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Earth's interior is not a benign world that only stores the geologic history of our planet. Geologists now see the normally assumed placid inner Earth as a dynamic environment filled with exotic materials and ... | |
 Fires in Far Northern Forests to Have Cooling, Not Warming, Effect November 16, 2006 | User rating: 4.5 / 5 after 13 vote(s)
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Droughts and longer summers tied to global warming are causing more fires in the Earth’s vast northernmost forests, a phenomenon that will spew a steadily increasing amount of carbon dioxide into the atmosphere. | |
 New Earthquake Model for Los Angeles Finds Some Faults Moving Faster Than Expected November 14, 2006 | User rating: 4.6 / 5 after 28 vote(s)
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An analysis of slip rates for 26 active faults in the Los Angeles metropolitan area validates a new approach to modeling fault tectonics and finds that some faults may be moving faster than earlier models estimated, ... | |
 Ocean current links northern and southern hemisphere during Ice Age November 08, 2006 | User rating: 4.6 / 5 after 27 vote(s)
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Even if climate records from Greenland and Antarctic ice cores show different patterns climate of Arctic and Antartica are connected directly. Recent investigations on an Antarctic ice core now published in ... | |
Himalayan megaquakes powered by elastic energy in Tibetan plateau November 08, 2006 | User rating: 4.3 / 5 after 27 vote(s)
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Computer simulations indicate that Himalayan mega-earthquakes must occur every 1,000 years or so to empty a reservoir of energy in southern Tibet not released by smaller earthquakes, according to a paper that will appear ... | |
 Ocean Creatures Linked to Cloud Cover Increases November 07, 2006 | User rating: 4.6 / 5 after 32 vote(s)
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Atmospheric scientists have reported a new and potentially important mechanism by which chemical emissions from ocean phytoplankton may influence the formation of clouds that reflect sunlight away from our ... | |
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