Award-winning INEEL probe to help safely monitor hazardous waste sites
...ted by groundwater or not, making its applications stretch beyond INEEL's mission, Jones notes. About 300,000 waste disposal sites are scattered across the nation, some containing PCBs, corrosives, heavy metals, and radioactive materials. Many of these wastes were buried when scientists thought they were saf...International human genome sequencing consortium describes finished human genome sequence
...ely improved. The average DNA letter now sits on a stretch of 38.5 million base pairs of uninterrupted, high-... about 475 times longer than the 81,500 base-pair stretch that was available in the working draft. Access to uninterrupted stretches of sequenced DNA can grea...Actin muscles in on DNA transcription
... size of Grand Central Station, then the DNA would stretch from New York to San Francisco, back to New York again, and on to Kansas City," said de Lanerolle. Part of the factory is a group of proteins that, once assembled, jump-starts transcription. While scientists know a great deal about this pre-initiatio...Visualizing the end of the human genome
...To their surprise, they found that POT1 required a stretch of telomeric DNA containing at least ten nucleotides for efficient recognition and binding of DNA. "We were confused about how ten nucleotides was even a binding site, because it wasn't a multiple of six." Cech said. "If you need to coat something th...Researchers discover direct link between agricultural runoff and massive algal blooms in the sea
... as the Gulf of California-a narrow, 700-mile-long stretch of the Pacific Ocean that separates the Mexican mainland from the Baja California Peninsula. Immortalized in the 1941 book Sea of Cortez, by writer John Steinbeck and marine biologist Edward Ricketts, the region remains a hotspot of marine biodiversi...Hummingbirds lose power at high altitudes
...gh lifting trials and flight tests over a two-year stretch in order to find out how their flying abilities are affected by the lower oxygen and thin air of higher elevations. The results, which appeared this week in the Proceedings of the National Academy of Sciences (PNAS) Online Early Edition, show a clear...New health policy challenges extend beyond borders
More and more health policy challenges stretch across borders, and even powerful nations like the U.S. have found that they can no longer ensure the health of their citizens through national policies alone. Understanding and responding to this growing interdependence requires both health policy a...Powerful X-ray beams at Argonne, new electronic flight simulator
...ed interactions of various proteins as the muscles stretch and contract that suggest a model for how these powerful biological motors turn "on" and "off" during the wingbeat. Irving said, "We are now in a position to relate muscle power output to changes in molecular structure, which helps us understand how ...Hypertension risk in African-Americans linked to genetics, Stanford study finds
...tead, they are simply signposts to indicate that a stretch of DNA is African in origin rather than European. Most African-Americans have a mixed background with some European ancestry and therefore contain a mixture of African and European signposts at these locations. The goal was to figure out if people wi...How many comparative genomes are enough?
...ed to know whether evolution has conserved a given stretch of DNA? In an article published in the January 2005 issue of PLoS Biology , Sean Eddy , a Howard Hughes Medical Institute investigator at Washington University School of Medicine in St. Louis, describes a mathematical model that offers detailed an...Experiments provide proof of how traveling in groups protects insects
...ath that's edible. Some spectacular marching packs stretch several miles wide and extend 10 miles or so in length. And they can travel a mile or so a day. Why such groups of insects form has mystified humans for thousands of years. One firmly held belief was that God was punishing men and women for their sin...Genome-wide mouse study yields link to human leukemia
...giuri and Plass were able to identify a particular stretch of DNA, called Id4, as a tumor suppressor gene. Tumor suppressor genes help control cancer by identifying and getting rid of defective cells before they have a chance to mature and divide. When tumor suppressor genes lose that ability as they can i...Oceans more vulnerable to agricultural runoff than previously thought, study finds
...known as the Sea of Cortez-a narrow, 700-mile-long stretch of the Pacific Ocean that separates the Mexican mainland from the Baja California Peninsula. The area is a hotspot of marine biodiversity and one of Mexico's most important commercial fishing centers. "Biological productivity in most of the world's o...Cooperation is keya new way of looking at MicroRNA and how it controls gene expression
... be relatively straightforward. After all, a short stretch of nucleotides like a microRNA should be expected to bind to a piece of RNA of equal length and complementary sequence. And since these sequences of the microRNA were known, a computer search through the three billion letters of the human genome shou...Winners of Tyler Environmental prize announced
...ique facilities in Columbus, Ohio. His expeditions stretch the limits of human endurance and capability," Moore wrote. G.J. Wasserburg, John D. MacArthur Professor Emeritus at the California Institute of Technology, wrote: "His efforts have been remarkable. They also represent a kind of sensible but heroic a...Balancing act at chromosome ends
...our 46 chromosomes is capped by a telomere a long stretch of repeated DNA (TTAGG). Telomeres play a key protective function in our cells, and now Dr. In Kwon Chung and colleagues at Yonsei University (Seoul, Korea) and the University of Central Florida reveal a novel mechanism to modulate telomere length. T...Scientists analyze chromosomes 2 and 4
...e. They subsequently identified a 36,000 base pair stretch of DNA sequence that likely marks the precise location of the inactived centromere. That tract is characterized by a type of DNA duplication, known as alpha satellite repeats, that is a hallmark of centromeres. In addition, the tract is flanked by an...Scientists announce world's most sensitive cancer test
...ne uses a powerful beam of infrared laser light to stretch and measure cells one by one. His optical stretcher differs from an existing tool known as optical tweezers in which the light is focused to a sharp point to grab hold of a cell. In contrast, the optical stretcher doesn't use focused light. This allo...Breakthrough isolating embryo-quality stem cells from blood
...ne uses a powerful beam of infrared laser light to stretch and measure cells one by one. His optical stretcher differs from an existing tool known as optical tweezers in which the light is focused to a sharp point to grab hold of a cell. In contrast, the optical stretcher uses un-focused light. This allows l......rmation of RPA, scrunching it up to expose a small stretch of ssDNA. Tag brings with it pol-prim, which is deposited in the short stretch of unbound ssDNA. Once pol-prim is in place, Tag and RPA are no longer needed, so they are displaced...