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Friday, January 29, 2010

Global Warming 'Feedback' Less Than Thought?


A new estimate of the feedback between temperature and atmospheric carbon dioxide (CO2) concentration has been derived from a comprehensive comparison of temperature and CO2 records spanning the past millennium. New research implies that the amplification of current global...

Monday, January 25, 2010

Mouse Sperm Cooperates With Its Brethren


Some mouse sperm can discriminate between its brethren and competing sperm from other males, clustering with its closest relatives to swim faster in the race to the egg. But this sort of cooperation appears to be present only in certain promiscuous species, where it affords...

Sunday, January 24, 2010

Neuron Connections Seen in 3-D


A team of researchers from the Max Planck Institute of Biochemistry, in Germany, led by the Spanish physicist Rubén Fernández-Busnadiego, has managed to obtain 3D images of the vesicles and filaments involved in communication between neurons. The method is based on a novel...

Saturday, January 23, 2010

New 'Nanoburrs' Could Help Fight Heart Disease


Building on their previous work delivering cancer drugs with nanoparticles, MIT and Harvard researchers have turned their attention to cardiovascular disease, designing new particles that can cling to damaged artery walls and slowly release medicine. Researchers have built...

Friday, January 22, 2010

Ozone Pollution in N. America from Asia


Springtime ozone levels above western North America are rising primarily due to air flowing eastward from the Pacific Ocean, a trend that is largest when the air originates in Asia. A cadre of government and commercial aircraft helped collect data for a new study linking...

Thursday, January 21, 2010

New Visible Light Photocatalyst Kills Bacteria, Even After Light Turned Off


In the battle against bacteria, researchers at the University of Illinois have developed a powerful new weapon -- an enhanced photocatalytic disinfection process that uses visible light to destroy harmful bacteria and viruses, even in the dark. Jian Ku Shang, a professor...

Tuesday, January 19, 2010

Tie Light in Knots by Physicists


The remarkable feat of tying light in knots has been achieved by a team of physicists working at the universities of Bristol, Glasgow and Southampton, UK, reports a paper in Nature Physics this week. The colored circle represents the hologram, out of which the knotted...

Sunday, January 17, 2010

How Music 'Moves' Us: Listeners' Brains Second-Guess the Composer


Have you ever accidentally pulled your headphone socket out while listening to music? What happens when the music stops? Psychologists believe that our brains continuously predict what is going to happen next in a piece of music. So, when the music stops, your brain may...

Friday, January 15, 2010

Biologists Wake Dormant Viruses and Uncover Mechanism for Survival


It is known that viral "squatters" comprise nearly half of our genetic code. These genomic invaders inserted their DNA into our own millions of years ago when they infected our ancestors. But just how we keep them quiet and prevent them from attack was more of a mystery...

Wednesday, January 13, 2010

'Wet' Computing Systems to Boost Processing Power


A new kind of information processing technology inspired by chemical processes in living systems is being developed by researchers at the University of Southampton. Sketch of artificial wet neuronal networks. (Credit: Image courtesy of University of Southampton) Dr Maurits...

Tuesday, January 12, 2010

Rise in Certain Disorders can be Explain by Human Evolution


The subtle but ongoing pressures of human evolution could explain the seeming rise of disorders such as autism, autoimmune diseases, and reproductive cancers, researchers write in the Proceedings of the National Academy of Sciences. Certain adaptations that once benefited...

Saturday, January 9, 2010

Evolutionary Surprise: Eight Percent of Human Genetic Material Comes from a Virus


About eight percent of human genetic material comes from a virus and not from our ancestors, according to researchers in Japan and the U.S. A new study shows that the genomes of humans and other mammals contain DNA derived from the insertion of bornaviruses, RNA viruses...

Evolution's Footprints in Human Genome Precisely Tracked Using New Approach


Fossils may provide tantalizing clues to human history but they also lack some vital information, such as revealing which pieces of human DNA have been favored by evolution because they confer beneficial traits -- resistance to infection or the ability to digest milk, for...

Thursday, January 7, 2010

The Large Hadron Collider : Physicists Beginning to See Data


Three Iowa State University physicists who took winter trips to the Large Hadron Collider for meetings and experimental work are starting to see real data from the planet's biggest science experiment. Last month the ATLAS experiment at the Large Hadron Collider began recording...

Wednesday, January 6, 2010

Obesity Now Poses as Great a Threat to Quality of Life as Smoking


As the US population becomes increasingly obese while smoking rates continue to decline, obesity has become an equal, if not greater, contributor to the burden of disease and shortening of healthy life in comparison to smoking. In a new study, researchers calculate that...

Sunday, January 3, 2010

Elusive Protein Points to Mechanism Behind Hearing Loss


A serendipitous discovery of deaf zebra fish larvae has helped narrow down the function of an elusive protein necessary for hearing and balance. The work, led by Rockefeller University's A. James Hudspeth, suggests that hearing loss may arise from a faulty pathway that...

Saturday, January 2, 2010

Scientists to Control Quantum Mechanical Force


Scientists at the U.S. Department of Energy's Argonne National Laboratory are developing a way to control the Casimir force, a quantum mechanical force that attracts objects when they are only hundred nanometers apart. These are MEMS used to detect the presence of the Casimir...

Friday, January 1, 2010

Lithium-Air Batteries might Displace Gasoline in Future Cars


Inside surplus of seven million barrels of gasoline are consumed by vehicles in the United States each time. Equally scientists rush to discover environmentally sound solutions to fuel the world's ever-growing moving needs, battery researchers are exploring the look good...