Submitted by admin on Thu, 2011-11-17 19:00
Julia Greer, assistant professor of materials science and mechanics at Caltech, is part of a team of researchers who have developed the world’s lightest solid material, with a density of just 0.9 milligrams per cubic centimeter, or approximately 100 times lighter than Styrofoam™. Though the material is ultra-low in density, it has incredible strength and absorbs energy well, making it potentially useful for applications ranging from battery electrodes to protective shielding.
Submitted by katien on Fri, 2011-11-11 08:00
A catastrophic landslide 22,500 years ago dammed the upper reaches of northern California's Eel River, forming a 30-mile-long lake—which has since disappeared—and leaving a living legacy found today in the genes of the region's steelhead trout, according to scientists at the California Institute of Technology (Caltech) and the University of Oregon.
Submitted by mwoo on Fri, 2011-11-04 07:00
They shrink when you heat 'em. Most materials expand when heated, but a few contract. Now engineers at the California Institute of Technology (Caltech) have figured out how one of these curious materials, scandium trifluoride (ScF3), does the trick—a finding, they say, that will lead to a deeper understanding of all kinds of materials.
Submitted by mwoo on Wed, 2011-11-02 22:00
Turning on the heater is a reasonable response to a cold environment: switch to a toastier state until it warms up outside. Biologists have long thought cells would respond to their environment in a similar way. But now researchers at Caltech are finding that cells can respond using a new kind of pulsating mechanism. The principles behind this process are surprisingly simple, the researchers say, and could drive other cellular processes, revealing more about how the cells—and ultimately life—work.
Submitted by admin on Tue, 2011-11-01 07:00
The best place to look for signs of past life on Mars may be underground. According to a new interpretation of the distribution of clay minerals on Mars, warm water may have stayed mostly confined to the planet's subsurface for hundreds of millions of years.
Submitted by katien on Tue, 2011-11-01 07:00
Many meat-eating animals have unique ways of hunting down a meal using their senses. To find a tasty treat, bats use echolocation, snakes rely on infrared vision, and owls take advantage of the concave feathers on their faces, the better to help them hear possible prey. Leeches have not just one but two distinct ways of detecting dinner, and, according to new findings from biologists at Caltech, their preferred method changes as they age.
Submitted by katien on Thu, 2011-10-27 18:00
Using highly potent antibodies isolated from HIV-positive people, researchers have recently begun to identify ways to broadly neutralize the many possible subtypes of HIV. Now, a team led by biologists at Caltech has built upon one of these naturally occurring antibodies to create a stronger version they believe is a better candidate for clinical applications.
Submitted by mwoo on Wed, 2011-10-12 07:00
Researchers at the Caltech have directly determined the surface temperature of early Mars for the first time, providing evidence that's consistent with a warmer and wetter Martian past.
Submitted by lorio on Mon, 2011-10-10 07:00
Researchers from Caltech have isolated a very specific difference in how high-functioning people with autism think about other people, finding that—in actuality—they don’t tend to think about what others think of them at all.
Submitted by kfesenma on Wed, 2011-10-05 17:00
For the first time, researchers at Caltech, in collaboration with a team from the University of Vienna, have managed to cool a miniature mechanical object to its lowest possible energy state using laser light. The achievement paves the way for the development of exquisitely sensitive detectors as well as for quantum experiments that scientists have long dreamed of conducting.