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Picky female frogs drive evolution of new species in less than 8,000 years
Picky female frogs in a tiny rainforest outpost of Australia have driven the evolution of a new species in 8,000 years or less, according to scientists from the University of Queensland, the University of California, Berkeley, and the Queensland Parks and Wildlife Service. view more (2005-10-31)
No safe ground for life to stand on during world's largest mass extinction
The world's largest mass extinction was probably caused by poisonous volcanic gas, according to research published today. view more (2005-12-02)
Complex structure observed in Tonga mantle wedge has implications for the evolution of volcanic arcs
The subduction zones where oceanic plates sink beneath the continents produce volcanic arcs such as those that make up the "rim of fire" around the Pacific Ocean. view more (2007-04-13)
Ice Age North Atlantic temperatures, tropical oceans linked
Sudden shifts in temperature over Greenland and tropical rainfall patterns during the last ice age have been linked for the first time to rapid changes in the salinity of the north Atlantic Ocean, according to research published Oct. 5 in the journal Nature. view more (2006-10-05)
Forests damaged by Katrina may contribute to global warming
Researchers led by biologist Jeffrey Chambers of Tulane University have determined that the losses inflicted by Hurricane Katrina on Gulf Coast forest trees are enough to cancel out a year's worth of new tree biomass (trunks, branches and foliage) growth in other parts of the country. view more (2007-11-16)
FLUCTUATIONS IN BIOLOGICAL PRODUCTION IN THE EQUATORIAL PACIFIC UNDERTHE EFFECT OF EL NINO
A region of the western equatorial Pacific, the Pacific warm pool, has exceptionally warm surface waters (an average 28.5°C) which have low salinity and are oligotrophic (nutrient-poor). At the Equator the Eastern edge of this pool comes into contact with cooler water (24°C on average) which is saline and nutrient rich (especially in... view more... (1999-05-11)
Application quantifies carbon sequestration of urban trees
U.S. Forest Service scientists at the Center for Urban Forest Research are providing online software that can show users how much carbon dioxide an urban tree in California has sequestered in its lifetime and the past year. view more (2008-12-10)
Natural deep earth pump fuels earthquakes and ore
For the first time scientists have discovered the presence of a natural deep earth pump that is a crucial element in the formation of ore deposits and earthquakes. view more (2009-06-18)
Human stem cells delay start of Lou Gehrig's disease in rats
Researchers at Johns Hopkins have shown that transplanting human stem cells into spinal cords of rats bred to duplicate Lou Gehrig's disease delays the start of nerve cell damage typical of the disease and slightly prolongs life. view more (2006-10-16)
Probe position may change results in liver stiffness measurements in transient elastography
A major clinical challenge is to find the best method to evaluate and to manage the increasing numbers of patients with chronic liver disease. Liver biopsy, due to its risks and limitations, is no longer considered mandatory as the first-line indicator of liver injury, and several markers have been developed as non-invasive alternatives. view more (2009-07-29)
A Little Nitrogen Can Go a Long Way
Varying the rate of crop production inputs such as fertilizer and seed makes intuitive sense, as farmers have long observed differences in crop yield in various areas of a single field. The availability of spatial yield information from combines equipped with yield monitors has provided a good resource for improved management. view more (2008-09-04)
Beetle dung helps forests recover from fire
Armed with a pair of tweezers and a handful of beetle droppings, University of Alberta forestry graduate Tyler Cobb has discovered why the bug-sized dung is so important to areas ravaged by fire. view more (2007-12-04)
CSI: Milky Way team works scene of dead star
Like a team of forensic detectives in a television show that could be called "CSI: Milky Way," a University of Chicago astrophysicist and his associates are piecing together how a mysterious infrared ring got left around a dead star that displays a magnetic field trillions of times more intense than Earth's. view more (2008-05-29)
NEAR-DEATH EXPERIENCE REMAINS A MYSTERY (pp 2010, 2029)
Authors of a Dutch study in this week's issue of THE LANCET conclude that medical explanations cannot account for the phenomonen known as near-death experience (NDE). Only a relatively small proportion of patients who became clinically dead (resulting in oxygen deprivation to the brain) reported NDEs after successful cardiac resuscitation. Some... view more... (2001-12-12)
Action of ghrelin hormone increases appetite and favors accumulation of abdominal fat
The ghrelin hormone not only stimulates the brain giving rise to an increase in appetite, but also favours the accumulation of lipids in visceral fatty tissue, located in the abdominal zone and considered to be the most harmful. view more (2009-05-20)
Press Invitation to the British Ecological Society`s Winter Meeting, University of York, 18-20 December 2002
You are invited to attend the UK's premier ecological event, the British Ecological Society's Winter Meeting, being held at the University of York on 18-20 December 2002. Thousands of ecologists from all four corners of the globe will be attending the meeting, which features more than 350 scientific papers and 150 posters, as well as the... view more... (2002-11-08)
Probiotics, mentioned on the labels of food products, often cannot be detected in the food.
In the course of a PhD research, fifty-five European probiotic products were screened for the identity and quantity of the bacterial strains included in these products. A probiotic is a living microorganism (bacteria or yeast) that upon intake, improves the health of the host by means of a number of positive effects in that host. These... view more... (2001-05-18)
Penn researchers enlist proteins to 'switch on' heart tissue repair system in animal models
Researchers at the University of Pennsylvania School of Medicine are utilizing a protein to "switch on" the ability to repair damaged heart tissue. view more (2006-07-10)
Durham scientist explores Sichuan fault
Durham University expert, Alex Densmore, is to explore the fault lines that caused the May 12th earthquake in China that killed 69,000 people. view more (2008-08-14)
Red Tide causes sea turtle die-off in El Salvador
A "Red Tide" event that occurred off the coast of El Salvador late last year directly caused the deaths of some 200 sea turtles. view more (2006-03-24)
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