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Sulfur signature changes thoughts on atmospheric oxygen
Ancient sediments that once resided on a lake bed and the ocean floor show sulfur isotope ratios unlike those found in other samples from the same time, calling into question accepted ideas about when the Earth's atmosphere began to contain oxygen. view more (2006-08-24)
When will Mount St Helens erupt?
Research reported in Science today (14 October 2004) shows that rocks erupted from the Mount St Helens volcano in 1980 preserve a remarkable record of the goings-on beneath the volcano in the period prior to its eruption. view more (2004-10-12)
Promethei Terra, southern highlands of Mars
These images, taken by the High Resolution Stereo Camera (HRSC) on board ESA's Mars Express spacecraft, show a part of the southern highlands of Mars, called Promethei Terra. The images were taken during orbit 368 in May 2004 with a ground resolution of approximately 14 metres per pixel. The displayed region is centred around longitude 118°... view more... (2004-10-12)
Getting people to move — challenges in promoting physical activity
Programs that discourage smoking have been reasonably successful. However, public health programs that encourage physical activity have not. view more (2006-12-20)
Historic volcanic eruption shrunk the mighty Nile River
Volcanic eruptions in high latitudes can greatly alter climate and distant river flows, including the Nile, according to a recent study funded in part by NASA. view more (2006-11-22)
New window into ancient ozone holes
British researchers have hit on a clever way to search for ancient ozone holes and their relationship to mass extinctions: measure the remains of ultraviolet-B absorbing pigments ancient plants left in their fossilized spores and pollen. view more (2005-08-10)
What is the pathogenesis of liver damage induced by ethanol?
They investigated the effects of ethanol on the IGF-I system with the involvement of JNK1/2 activity and ADH by using each chemical inhibitor in primary cultured rat hepatocytes. The results indicate that ethanol inducedp-JNK1/2 activation is associated with the IGF-I system and cell viability in hepatocytes. view more (2008-10-08)
When the rules of the game are broken: Research studies sports injuries related to illegal activity
A study published in the February issue of Injury Prevention estimates that more than 98,000 sports injuries in U.S. high schools in 2005-2007 were directly related to an action that was ruled illegal activity by a referee, official or disciplinary committee. view more (2008-03-03)
Protein plays broader role than originally thought in neurofibromatosis
Neurofibromatosis type I is a common genetic disorder in which tumors grow along certain types of nerves and can also affect other tissues such as bone, heart, and skin. view more (2006-08-11)
Discovered: World's Largest Tsunami Debris
A line of massive boulders on the western shore of Tonga may be evidence of the most powerful volcano-triggered tsunami found to date. Up to 9 meters (30 feet) high and weighing up to 1.6 million kilograms (3.5 million pounds), the seven coral boulders are located 100 to 400 meters (300 to 1,300 feet) from the coast. view more (2008-09-26)
It's relative: Contrasting hurricane theories heat up
In a paper published in the journal Science today, scientists Gabriel A. Vecchi of NOAA's Geophysical Fluid Dynamics Laboratory, Kyle L. Swanson of the University of Wisconsin - Milwaukee Atmospheric Sciences Group and Brian J. Soden from the University of Miami's Rosenstiel School of Marine and Atmospheric Science teamed up to study hurricane... view more... (2008-11-03)
Scientist Anticipates Major Eruption of Peru`s El Misti Volcano
Boulder, Colo.- Scientist Jean-Claude Thouret is worried about the one million people who live in the suburbs and city of Arequipa in southern Peru. The city`s center is only 17 km from the summit of the active El Misti volcano. Thouret and his colleagues report new findings on El Misti`s geology, past eruptions, and the reasons for probable... view more... (2001-12-10)
Study finds children's activity levels not influenced by more PE time in school
Scheduling more physical education time in schools does not mean children will increase their activity levels, suggests new research that discovered those who got lots of timetabled exercise at school compensated by doing less at home while those who got little at school made up for it by being more active at home. view more (2009-05-07)
Claritas Fossae tectonic region on Mars
These Mars Express images show Claritas Fossae, an ancient tectonic region on Mars, west of Solis Planum, a tectonic and volcanic area south-east of the Tharsis volcano group. The images were taken by the High-Resolution Stereo Camera (HRSC) on Mars in orbit 68 from an altitude of 271 km. The images are centred at 255.7° East and 30.9°... view more... (2004-03-31)
Plate tectonics may take a break
Plate tectonics, the geologic process responsible for creating the Earth's continents, mountain ranges, and ocean basins, may be an on-again, off-again affair. view more (2008-01-04)
Stratospheric injections could help cool Earth, computer model shows
A two-pronged approach to stabilizing climate, with cuts in greenhouse gas emissions as well as injections of climate-cooling sulfates, could prove more effective than either approach used separately. view more (2006-09-15)
Stimulation helps elderly people with dementia
Multi-Sensory Stimulation (MSS) and structured activity sessions are effective therapies for elderly people with dementia. They could also help to make the ward environment a more pleasant place for patients and staff. These are the conclusions made today, Friday 23 March, in an article in the British Journal of Clinical Psychology by Professor... view more... (2001-03-21)
Meteor no longer prime suspect in great extinction
The greatest mass extinction in Earth's history also may have been one of the slowest, according to a study that casts further doubt on the extinction-by-meteor theory. view more (2007-10-25)
Prescription exercise is effective
Advising patients in general practice on exercise (known as the green prescription programme) is effective in increasing physical activity and improving quality of life over 12 months, without evidence of adverse effects, finds a study in this week’s BMJ. view more (2003-04-10)
African Desert Rift Confirmed as New Ocean in the Making
In 2005, a gigantic, 35-mile-long rift broke open the desert ground in Ethiopia. At the time, some geologists believed the rift was the beginning of a new ocean as two parts of the African continent pulled apart, but the claim was controversial. view more (2009-11-03)
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