In the News
Under Pressure, Vanadium Won't Turn Down The Volume
Scientists at Carnegie's Geophysical Laboratory have discovered a new type of phase transition -- a change from one form to another -- in vanadium, a metal that is commonly added to steel to make it harder and more durable. Under extremely high pressures, pure vanadium crystals change their shape but do not take up less space as a result, unlike most other elements that undergo phase transitions. New weapon in battle of the bulge: Food releases anti-hunger aromas du
A real possibility does exist for developing a new generation of foods that make people feel full by releasing anti-hunger aromas during chewing, scientists in the Netherlands are reporting after a review of research on that topic. Such foods would fight the global epidemic of obesity with aromas that quench hunger and prevent people from overeating. Sandia Assists NASA With Space Shuttle Rollout Test
Sandia National Laboratories recently conducted a series of tests to help NASA understand the fatigue on the space shuttle caused during rollout from the Kennedy Space Center assembly building to the launch pad -- a four-mile trip. High Levels Of Pollutants May Decrease Sexual Organ Size In Polar Bear
Exposure to high levels of environmental pollutants called organohalogen compounds (OHCs) seems to reduce the size of sexual organs in male and female polar bears, researchers report in an article scheduled for the Sept. 15 issue of the ACS journal, Environmental Science &Technology. OHCs include dioxins, polychlorinated biphenyls and some pesticides. NASA Study Finds Earth's Auroras Are Not Mirror Images
Scientists looking at the Earth's northern and southern auroras were surprised to find they are not mirror images of each other, as was once thought. The main cause behind the differences appears to be the interaction between the Sun's outer atmosphere and the Earth's magnetic field. One Signal Elicits Thousands Of Answers
Cell signaling mechanisms often transmit information via protein modifications, most importantly the reversible attachment of phosphate, the so-called protein phosphorylation. Researchers at the Max Planck Institute of Biochemistry in Martinsried have now developed a technology to identify and quantify the specific sites in proteins that get phosphorylated in answer to certain stimuli in living cells. Lady in Red Goes Monochrome
The Rubens classic, Portrait of a Young Lady, is losing its color thanks to a small quantity of chloride in the red pigment. Dutch researchers claim to have found the cause. New Medical Devices Can Cause New Immune Problems
Medical devices are traditionally thought of as fairly simple implants such as stents and hip replacements - pieces of plastic or metal that are placed in the body to handle a very specific function. But biomedical devices now on the drawing board are considerably more sophisticated and represent an unprecedented melding of man and machine. United Nations Convention to Combat Desertification (UNCCD)
Information about this United Nations program that addresses the "problem of land degradation in arid, semi-arid and dry sub-humid areas."The site features fact sheets, regional profiles, reports, program descriptions, a list of non-governmental organizations (NGOs) involved in the program, and science updates on topics such as water management and early warning systems. Also includes links to related sites. Searchable. Note: Some materials only available in languages other than English. Cellular Power Plants Also Fend Off Viruses
Howard Hughes Medical Institute researchers have discovered a surprise lurking inside mitochondria, the power plants that are present in every cell. It turns out that these powerhouses also contain a protein that triggers the immune system to attack viral invaders.
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