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Dictyostelium cells shown to lay 'breadcrumb trail' as first step in multicellular formation
When starved of their food source and then presented with a chemoattractant signal like cAMP, individual Dictyostelium cells acquire a polarized morphology and aggregate to form a migrating stream.   view more (2008-12-01)

Melatonin may save eyesight in inflammatory disease
Current research suggests that melatonin therapy may help treat uveitis, a common inflammatory eye disease. The related report by Sande et al., "Therapeutic Effect of Melatonin in Experimental Uveitis," appears in the December issue of The American Journal of Pathology.   view more (2008-11-24)

Bad cholesterol inhibits the breakdown of peripheral fat
he so called bad cholesterol (LDL) inhibits the breakdown of fat in cells of peripheral deposits, according to a study from the Swedish medical university Karolinska Institutet. The discovery reveals a novel function of LDL as a regulator of fat turnover besides its well-established detrimental... view more (2008-11-20)

The Next Step in Health Care: Telemedicine
Imagine a scenario where doctors from different hospitals can collaborate on a surgery without having to actually be in the operating room. What if doctors in remote locations could receive immediate expert support from top specialists in hospitals around the world?   view more (2008-11-13)

Sunlight has more powerful influence on ocean circulation and climate than North American ice sheets
A study reported in today's issue of Nature disputes a longstanding picture of how ice sheets influence ocean circulation during glacial periods.   view more (2008-11-07)

Penn Scientists Show How Body Determines Optimal Amount of Germ-Fighting B Cells
Researchers at the University of Pennsylvania School of Medicine can now explain how the body determines whether there are enough mature B-cells in the blood stream at any one time. These are the cells that produce antibodies against germs to fight infections.   view more (2008-11-05)

Simple chemical procedure augments therapeutic potential of stem cells
Adult stem cells resemble couch potatoes if they hang out and divide in a dish for too long. They get fat and lose key surface proteins, which interferes with their movement and reduces their therapeutic potential. Now, via a simple chemical procedure, researchers have found a way to get these... view more (2008-10-31)

Large hormone dose may reduce risk of post-traumatic stress disorder
A new study by Ben-Gurion University of the Negev (BGU) researchers found that a high dose of cortisone could help reduce the risk of post-traumatic stress disorder (PTSD).   view more (2008-10-28)

The groundbreaking science behind what aims to be the fastest vehicle of all time
The world record bid again teams Andy, the current record holder and first man to drive a supersonic vehicle on land with Head of the Design Team and former world record holder Richard Noble.   view more (2008-10-24)

UGA study reveals ecosystem-level consequences of frog extinctions
Streams that once sang with the croaks, chirps and ribbits of dozens of frog species have gone silent. They're victims of a fungus that's decimating amphibian populations worldwide.   view more (2008-10-17)

Beavers: Dam good for songbirds
The songbird has a friend in the beaver. According to a study by the Wildlife Conservation Society (WCS), the busy beaver's signature dams provide critical habitat for a variety of migratory songbirds, particularly in the semi-arid interior of the West.   view more (2008-10-09)

NASA study finds rising Arctic storm activity sways sea ice, climate
A new NASA study shows that the rising frequency and intensity of arctic storms over the last half century, attributed to progressively warmer waters, directly provoked acceleration of the rate of arctic sea ice drift, long considered by scientists as a bellwether of climate change.   view more (2008-10-07)

Case Western Reserve University project ties soil conservation and river management together
Sediment in rivers comes from erosion of the landscape as well as the erosion and collapse of the banks themselves. Just how much each source contributes to a river - and how it affects the flow and path of that river - is the subject of research by Peter Whiting, professor of geological sciences... view more (2008-10-02)

Infrared Echoes Give NASA's Spitzer a Supernova Flashback
Hot spots near the shattered remains of an exploded star are echoing the blast's first moments, say scientists using data from NASA's Spitzer Space Telescope.   view more (2008-10-02)

New research shows why metal alloys degrade
Metal alloys can fail unexpectedly in a wide range of applications---from jet engines to satellites to cell phones---and new research from the University of Michigan helps to explain why.   view more (2008-09-25)

From Sugar to Gasoline
Following independent paths of investigation, two research teams are announcing this month that they have successfully converted sugar-potentially derived from agricultural waste and non-food plants-into gasoline, diesel, jet fuel and a range of other valuable chemicals.   view more (2008-09-22)

'Naked-eye' gamma-ray burst was aimed squarely at Earth
Data from satellites and observatories around the globe show a jet from a powerful stellar explosion witnessed March 19 was aimed almost directly at Earth.   view more (2008-09-12)

The Double Firing Burst
Astronomers from around the world combined data from ground- and space-based telescopes to paint a detailed portrait of the brightest explosion ever seen. The observations reveal that the jets of the gamma-ray burst called GRB 080319B were aimed almost directly at the Earth.   view more (2008-09-11)

Evolving designer ecosystem sheds light on unintended consequences
Amidst the semi-arid stretches of Phoenix, a visitor might blink twice at the sight of a sailboat cutting across the horizon. Tempe Town Lake, on the northern edge of Arizona State University (ASU), is just one of a multitude of lakes, small ponds, canals and dams combining flood control, water... view more (2008-09-04)

'Perfect pitch' in humans far more prevalent than expected
Researchers at the University of Rochester's Eastman School of Music and Department of Brain and Cognitive Sciences have developed a unique test for perfect pitch, and have found surprising results.   view more (2008-08-26)

Nano-sized 'trojan horse' to aid nutrition
Researchers from Monash University have designed a nano-sized "trojan horse" particle to ensure healing antioxidants can be better absorbed by the human body.   view more (2008-08-25)

Measuring the auditory dynamics of selective attention
Call it the cocktail party effect: how an individual can participate in a one-on-one conversation within a cluster of people, switch to another, pick up important comments while tuning out others, change topics and return to the first conversation.   view more (2008-08-22)

Bringing Martian samples to Earth -- preparations outlined in journal Astrobiology
A critical component of NASA's Mars exploration program involves bringing planetary samples back to Earth for in-depth analysis, plans for which are detailed in the latest issue of Astrobiology, a peer-reviewed journal published by Mary Ann Liebert, Inc. The report is available free online at... view more (2008-08-14)

Jupiter and Saturn full of liquid metal helium
A strange, metal brew lies buried deep within Jupiter and Saturn, according to a new study by researchers at the University of California, Berkeley, and in London.   view more (2008-08-07)

Tracking down abrupt climate changes
In an article in the scientific magazine Nature - Geosciences, the geoscientists Achim Brauer, Peter Dulski and Jörg Negendank, (emeritus Professor) from the GFZ German Research Centre for Geosciences, Gerald Haug from the DFG-Leibniz Center for Surface Processes and Climate Studies at the... view more (2008-08-04)
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