In the News
Biologists Probe The Machinery Of Cellular Protein Factories
Proteins do most of the work in living cells, and the DNA sequences in genes provide instructions for making those proteins. The crucial job of reading the genetic instructions and synthesizing the specified proteins is carried out by ribosomes, tiny protein factories humming away inside the cells of all living things. Researchers now have an atomic-scale image of the ribosome that shows details never seen before and suggests how certain parts move during protein synthesis. Scientists Get A Real 'Rise' Out Of Breakthroughs In How We Understand
For the first time, researchers have the tools and expertise to understand the rate at which sea level is changing and the mechanisms that drive that change. Sea levels rise and fall as oceans warm and cool and as ice on land grows and shrinks. From the Mississippi Delta to the Maldives Islands off the coast of India to the multitude of other low-lying coastal areas around the world, it's estimated that over 100 million lives are potentially impacted by a three-foot increase in sea level. Switching To Chemistry
Researchers at the Weizmann Institute of Science have demonstrated a new kind of electrical switch, formed of organic molecules, that could be used in the future in nanoscale electronic components. Works of Art: The Costume Institute
"The world-renowned Costume Institute at the Metropolitan Museum [in New York] possesses more than 75,000 costumes and accessories from seven centuries and five continents."This site provides a brief overview of the collection and images of 50 specially selected items. Also includes images and information about exhibits on topics such as fashion and furniture in the 18th century, rock-and-roll style, and "Extreme Beauty: The Body Transformed"(about items such as corsets, bustles, and lotus shoes). Modified Herpes Virus Keeps Arteries 'Free-flowing'Following Procedure
A genetically engineered herpes simplex virus, primarily known for causing cold sores, may help keep arteries "free-flowing"in the weeks following angioplasty or stent placement for patients, according to new research. New Research Shows Folic Acid In Grains Has Reduced Birth Defects
Folic acid fortification of grain foods has produced a one-third decline in serious birth defects of the brain and spine, but the March of Dimes urged federal officials to help spare a greater number of babies from these devastating conditions by requiring 350 micrograms of the B vitamin per 100 grams of grain. Low-energy Neutrinos Detected Inside Sun
Researchers have observed tell-tale signals of neutrinos emitted by thermonuclear fusion reactions that power the sun deep in its interior. At approximately 15 million degrees, protons -- the nuclei of hydrogen atoms -- and light elements can fuse to form new nuclei. Several such steps eventually convert the hydrogen in the sun into helium, releasing about 25 million times more energy per gram than TNT, oil, or coal. Stress In Elderly Linked To Low Birth Weight
Low birth weight children may be at a greater risk of stress-related health problems as adults, according to a new study. Findings from this study show that low birth weight (below the 10th percentile) can lead later in life to low concentrations of cortisol, a hormone that regulates stress response by adjusting blood pressure and blood sugar levels. An imbalance in cortisol can result in a host of common adult diseases, such as coronary heart disease and diabetes. This study indicates that there may be a link between fetal life conditions and adult disease. Past Droughts Geographically Widespread In The West, According To Tree
When it's dry, it's dry all over, according to a new analysis of more than 400 years of annual streamflow in the Upper Colorado and Salt/Verde river basins. By using data from tree rings, University of Arizona researchers conclude that severe droughts and low-flow conditions in one basin are unlikely to be offset by abundant streamflow in the other basin. The study covers waterways from the states of Arizona, Colorado, New Mexico, Utah and Wyoming. Internationally Adopted Children Shed Light On How Babies Learn Langua
Each year, about 40,000 children are adopted across national lines, primarily by families from North America and Western Europe. Although most are infants and toddlers, thousands of older children are also adopted. Jesse Snedeker of Harvard University believes that these older children can help us understand how infants learn their native language. Early language development follows a predictable series of milestones. Babies initially say one word at a time, and mostly use nouns ("ball") or social words ("hi"). As they grow older their sentences become longer and more complex, as verbs ("take") and grammatical words ("about") begin to appear.
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