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Drivers are four times more likely to have an accident if they use a mobile phone on the road. However, using a “talking windscreen” rather than a traditional mobile phone while driving could reduce this risk, and so help to prevent accidents, according to Oxford University research just published in Psychological Science.
A growing body of evidence shows that using a hands-free phone is as problematic for drivers as using a hand-held phone. It is probably the distraction of a driver´s atte
Regulating cells under stress
An article published this week in the journal Nature provides the first experimental evidence for an unusual molecular bonding mechanism that could explain how certain cells adhere to surfaces such as blood vessel walls under conditions of mechanical stress.
Known as “catch bonds,” the adhesion mechanism displays surprising behavior, prolonging rather than shortening the lifetimes of bonds between specific molecules as increasing force is applied. Pr
The storage of plutonium has long plagued scientists. “It is a dangerous metal and its long term storage must be done with special care so as not to harm the environment, ”said physicist Serguei Savrasov, Ph.D.
Finding a solution to this problem led Savrasov, an associate professor at New Jersey Institute of Technology (NJIT), and a team of researchers at Rutgers University and Los Alamos National Laboratories, to study how this metal reacts to heat, a natural condition of storage over time
If the evolution of complex organisms were a road trip, then the simple country drives are what get you there. And sometimes even potholes along the way are important.
An interdisciplinary team of scientists at Michigan State University and the California Institute of Technology, with the help of powerful computers, has used a kind of artificial life, or ALife, to create a road map detailing the evolution of complex organisms, an old problem in biology.
In an article in the May 8 is
Duke University Medical Center biochemists have developed a computational method to design proteins that can specifically detect a wide array of chemicals from TNT to brain chemicals involved in neurological disorders. In a paper in the May 8, 2003, issue of the journal Nature, they demonstrate the breadth of their design method, and also that such sensor proteins can be re-incorporated into cells to activate cellular signaling and genetic pathways.
The researchers said their achievement c
There’s a small problem with Earth’s magnetic field: It should not have existed, as Earth’s rock record indicates it has, for the past 3.5 billion years. Motions in the Earth’s molten iron core generate convection currents–similar to boiling water–which produce the field. Many sources of heat drive these currents, but the known sources seem inadequate to maintain the field this long. In 1971 University of Minnesota geology and geophysics professor Rama Murthy theorized that radi