As world warms, vegetation changes may influence extreme weather
.... "Changes in vegetation cover can push the region toward more or fewer extreme events - it depends on where you look," he said. "In the high Sierra Nevada, for example, people have often theorized that as the globe warms, evergreen forests will migrate to higher altitudes and be lost as they hit the mounta...DRI awards 2005 Nevada Medal to University of Washington archaeologist Donald K. Grayson
...ce in 2002. Fellows are chosen for "their efforts toward advancing science or fostering applications that a...to account the significance of these contributions toward resolution or understanding of critical scientific, environmental or technical challenges....Certain fish have a special mating preference
...within the female's body that biases fertilization toward males with a particular genital morphology has been largely responsible for the generation of genital diversity. Langerhans's finding, however, contradicts that theory: he has shown that female mosquitofish make their choice before mating, and overw...Science, AAAS select two for new minority internship
... (Science & Everyday Experiences) program geared toward African American children and their families; the Minority Scientists Network , a bi-monthly online publication that provides support to underrepresented minority students pursuing an education and career in science, mathematics and engineering; the...Heart failure wall stress drops 38% with moderate thyroid hormone therapy
... on the heart's wall nearly 40%. "As patients move toward heart failure, the myocytes become longer and flatter, and the wall stress worsens," according to the head of the laboratory where the research was performed. "But moderate TH therapy selectively targeted myocyte cross-sectional shape and modified i...Cigarette smoke exacerbates alcohol's effects on defense against Streptococcus pneumoniae
...ion alone can increase movement of S. pneumoniae toward the lungs, and that smoke exposure exacerbates alc... consumption increases movement of S. pneumoniae toward the lungs, and that smoke exposure exacerbates the alcohol-induced increase in bacterial penetration...B cells are required for development of epithelial cancer associated with chronic inflammation
... lymphocytes or recruitment of innate immune cells toward premalignant tissue may represent a viable strategy to protect against the development of cancer in tissues identified as "at risk" due to chronic inflammation. Previous studies have implicated an interaction between adaptive immune cells, like B lym...Mother birds increase progesterone to hatch females
...cies use to bias the sex ratios of their offspring toward female. By experimenting with domestic chickens, they have determined that the presence of higher-than-normal levels of the hormone progesterone during the first meiosis -- the cell division that divides the sex chromosomes and genetically determines...Genetic factors partly influence differences in language development
...e of environmental influences is just a first step toward future research to identify specific environments involved. As specific genes and environments are identified, we can begin to understand the complex mechanisms of development of individual differences in language abilities."...NIMH research showcased at APA meeting
...ntal health field, about NIMH's commitment to work toward a long-term goal of personalized care for every individual who lives with a mental disorder," added Insel....Scripps scientists find potential for catastrophic shifts in Pacific ecosystems
...ent, gives support to a current trend in fisheries toward adaptive management strategies. Fisheries harvest targets need to be flexible and precautionary. This result strengthens the scientific basis for these polices." The new study is believed to be the first direct test for nonlinearity in large-scale ...Fibromyalgia patients may benefit from cough remedy, UF study finds
...e past 25 years substantial progress has been made toward understanding the mechanisms behind specific features of fibromyalgia, Staud said. One is central sensitization, a feature of many chronic pain conditions in which the central nervous system - the brain and spinal cord - somehow magnifies pain signal...Racehorses, asthmatics, meatpackers may have similar etiology of airway disturbances
...derstanding the development and perhaps give hints toward cures for asthma and related diseases. Specifically, the Oklahoma State team reported that their research "data are the first to provide a specific mechanism for the exercise-induced open-window effect as a local pulmonary phenomenon." The research ...HHMI awards first Gilliam Graduate Fellowships
...Fellowships annually for up to five years of study toward a Ph.D....Marine sponge yields nanoscale secrets
... UCSB scientists are already taking the next steps toward the development of practical new and useful methods of nanoscale production by incorporating catalytic components on the flat surfaces of silicon wafers, using these techniques to create nanoscale patterns of their catalyst. They are learning how to ...At long last, scientists figure out how plants grow
... shoots and branches. The hormone travels downward toward the roots. It migrates into plant cell nuclei, where it is picked up by the TIR1 portion of a four-protein complex called SCF(TIR1). SCF(TIR1) and auxin binds to yet another protein that represses the expression of a particular set of genes. And it's...Protein helps regulate the genes of embryonic stem cells
...he various histone modifications is the first step toward understanding how epigenetics influences such occurrences as cancer and birth defects, he added. The discovery that eed is required to modify histone H3 in a unique way opens up new lines of investigation into the role eed might play in diverse biolo...Scientists journey to southern Africa to unravel the secret world of elephant communication
...studies showing that elephants will sometimes move toward distant thunderstorms. "When it rains in Angola, e...ed his flat on the ground, the tip pointing inward toward his front feet. Billy and the others remain still like statues for several seconds. Finally, the spe...New understanding of DNA repair may pave way to cancer treatments
...nd to allow for further development of the peptide toward clinical assessment. "Until our recent studies, we were certain that the mechanism by which ATF2 affects melanoma growth was primarily through its established function in the regulation of proteins important in cell cycle and cell death control. We...Natural relaxant protects against asthma, may yield new therapy
... particularly exciting as a potential new approach toward asthma therapy," Que said. GSNO is a molecule in the nitric oxide family. Earlier studies suggested that nitric oxide (NO) might regulate the dilation of airways, with the exhaled breath of patients with asthma showing elevated levels of NO, Stamler...