Engineering researchers at the University of California, San Diego are using the shell of a seaweed-eating snail as a guide in the development of a new generation of bullet-stopping armor. The colorful oval shell of the red abalone is highly prized as a source of nacre, or mother-of-pearl, jewelry, but the UCSD researchers are most impressed by the shell’s ability to absorb heavy blows without breaking.
In a paper published in the Jan. 15 issue of Materials Science and Engin
How do you remember your own name? Is it possible ever to forget it? The memory trace, or engram, “feels” like it is stored permanently in the brain and it will never be forgotten.
Indeed, the current view of memory is that, at the molecular level, new proteins are manufactured, in a process known as translation, and it is these newly synthesized proteins that subsequently stabilize the changes underlying the memory. Thus, every new memory results in a permanent representation in
Astronomers are announcing today the first results of a search for extrasolar planets and brown dwarfs in an unlikely place–the stellar graveyard. The report, titled “Searching for Extrasolar Planets in the Stellar Graveyard,” is being presented at the American Astronomical Society meeting in San Diego, California, by John Debes, a graduate student at Penn State; Steinn Sigurdsson, associate professor of astronomy and astrophysics at Penn State University; Bruce Woodgate, of the NASA Goddard Spa
Finding how the fowl-borne bacteria Campylobacter jejuni makes at least a million Americans miserable for a week each year is on the plates of two Medical College of Georgia microbiologists.
Raw and undercooked poultry and meat, raw milk and untreated water are sources for Campylobacter, the most common bacterial cause of diarrhea in the United States, according the U.S. Public Health Service.
But finding how these bacteria that happily co-exist with chickens and turkeys
Carbon and silicate grains in interplanetary dust particles are helping scientists solve a 40-year-old astronomical mystery.
Using a transmission electron microscope, researchers from Lawrence Livermore National Laboratory have detected a 5.7-electron volt or 2175 Å (angstrom) wavelength feature in interstellar grains that were embedded within interplanetary dust particles (IDPs). They found that this feature is carried by carbon and amorphous silicate grains that are abundant in
More than 250 new examples of Englands finest array of prehistoric rock art carvings, sited close to the Scottish border, have been discovered by archaeologists compiling a unique database.
Now over one thousand of the cup and ring carvings can be admired on a new website, which carries 6,000 images and is said to be the most comprehensive of its kind in the world. The site, which goes live today, includes the 250 panels unearthed during a two-and-a-half year t