NASA satellite tracks hazardous smoke and smog partnership
...calculate the smog in a "column"of atmosphere that stretches from the surface to thetropopause, more than 40,000 feet high. A paper titled "Tropospheric Ozone and Biomass Burning," byGoddard's Anne Thompson and researchers at the University ofMaryland; Science Systems and Applications, Inc.; andHokkaido Univer...Scientists sequence genome of strep throat, scarlet fever bacterium
...ganism, also known as group A streptococci or GAS, stretches long: GAS infection can lead to strep throat, scarlet fever, the skin infection impetigo, pneumonia, acute kidney inflammation, toxic shock syndrome, blood "poisoning," acute rheumatic fever, rheumatic heart disease, and the flesh-eating disease know...Proteins are vastly more complicated than previously realized
...at numerous contact points. The movement of a cell stretches the proteins around it, and vice versa. A new UW study says scientists are going to have to study how protein structures change when stretched before they understand how the body functions. "The function of a protein is tightly controlled by its stru...So just how many genes do we have?
...on computer programs that search raw sequences for stretches that resemble known genes. But the programs tend to throw up lots of genes that don't really exist. To avoid counting these, Celera and the consortium demanded evidence that gene candidates really are transcribed to make the messenger RNAs that cell...... The mobile unit housing the mammography equipment stretches to 80 feet long and 40 feet wide when in operation, but retracts to a more manageable length of 53 feet and a width of 8 and a half feet when on the road. Within the van, sophisticated computer equipment and interfaces to a satellite telecommunicati...Overfishing sets the stage for other problems in marine ecosystems
...ors conclude aftera review of historical data that stretches back thousands of years. In the Gulf of Maine, evidence for the loss of large predatory fish isclear, says co-author Robert Steneck of the University of Maine DarlingMarine Center in Walpole. While a cause and effect relationship betweenthe loss ...Packard, Stanford researchers uncover gene family critical to asthma development
...ial technique to look at the effects of only small stretches of DNA at a time, however, they identified a previously unknown group of nearby genes, called the Tim family, as primary culprits. "It was only by using this mouse model that we could identify a locus and some potential candidate genes that co...Microbe genes help scientists reconstruct animal origins
... many forms today and, like animals, their lineage stretches back hundreds of millions of years ago to the mix of microscopic life that first evolved on Earth. "Choanoflagellates thrive today and are the closest non-animal organisms to animals. They are to animals what chimps are to humans, and by studying so...White sharks migrate thousands of miles across the sea, new study finds
...ure reveals that whitesharks can range across vast stretches of the open ocean. In fact, one maletagged along the Central California coast migrated thousands of miles tothe warm waters off Hawaii - and remained there for nearly four months. The Nature study was co-authored by six marine scientists from threeCa...New test detects colon cancer gene
... fecal samples and to isolate and amplify the long stretches of DNA necessary to detect APC mutations. The key to detecting the APC mutations was the development of a new analytical method that the investigators termed digital protein truncation. "Basically, we were looking for a needle in a haystack, but ...February media highlights - GSA Bulletin
...ate dives beneath North America. This basin, which stretches between from Cape Mendocino, California to Cape Sebastian, Oregon, records the tectonic history of the continental margin. A history that includes the switch around three to two million years ago from a margin where the material that overlay the Gord......he first part of the wave is a tension wave, which stretches the liquid and pulls apart a space for bubbles to form when the liquid is bombarded by energetic particles like neutrons. A second compression wave follows close behind, squeezing and bursting the bubbles, which then emit a brilliant but extremely br...SFVAMC study explains prostate cancer resistance to hormone therapy
...erous methyl groups are attached to the regulatory stretches of DNA near the beginning of the gene, said the studys lead author Raj Dahiya, PhD, director of the urology research center at SFVAMC, and UCSF professor of urology. This hypermethylation explains why we see inactivation of estrogen receptors in pros...April GEOLOGY and GSA TODAY media highlights
...e part of a larger zone of basaltic volcanism that stretches from Death Valley, California, to the Lunar Crater field in central Nevada. Within this larger zone, volcanism is episodic and sustained by hot mantle, with three peaks of volcanism occurring: one between 9.5 and 6.5 million years ago (Ma), the secon...Scientists devise new 'gene silencing' strategy: Genome, biomedical research expected to flourish
...ges. For example, researchers soon found that long stretches of double stranded RNA cause a global, non-specifi...uction by RNAi. After scientists learned that long stretches of double stranded RNA frequently trigger cell suicide instead of RNAi, Tom Tushls group of the Max ...Researchers find synthetic molecules that may literally be the key to 'locking away' unwanted DNA
...ol. Currently the synthetic molecule seeks out and stretches across a sequence of 5 DNA base pairs. The researchers are now working to extend it until they reach a point at which it will target a 15 base pair sequence. The particular Supramolecular Cylinder, [Fe2L3]4+, is an iron triple helicate with three org...Icebergs devastating impact on Antarctic marine life revealed by satellite data
...drifting out of the Ross Sea. As a result, large stretches of normally open ocean were covered with ice -from November 2000 to March 2001. During these crucial spring and summer months, the Ross Sea usually teems with life, as tons of microscopic marine algae called phytoplankton undergo reproductive bloom...Three-D images shed light on first steps of RNA synthesis
...rotein "domains" connected to one another by short stretches of amino acids called "linkers." With information from the holoenzyme structure published in Science, the researchers show that the domains of the sigma subunit spread out and bind to one face of the core enzyme, which positions sigma to bind to DNA....New microscope technology allows study of biomolecules interacting with minerals
...off hot gum on the sidewalk, the molecule actually stretches until it breaks loose. "Based on how much the molecule sticks, we can comment on how well siderophore likes that surface," says Kendall. "The excitement is being able to measure the affinity between the siderophore molecule and the iron in the minera...New insights into insect antimicrobials point the way to novel antibiotics
... bacterial protein for the first time. Because the stretches of the peptide that are responsible for cell entry are separate from the segments responsible for bacteria killing, the research team says that it might be possible to use an altered version of the peptide as a delivery vehicle for a variety of drugs...