A changing landscape may have dire implications for birds
... birds' nests. "Roads provide access and increased edges that nest predators including jays and crows use," Pidgeon says, "and we know from the work of others that an increase in predation accompanies an increase in housing density" as the domesticated animals that accompany humans, cats and dogs in partic......oGDI in the cytosol and move to the ruffles at the edges of the cell where they are needed. Thus, Rac must be released from RhoGDI for Rac to become active. "Nobody had any idea how this happened," says DerMardirossian. Now Bokoch, DerMardirossian, and Schnelzer have discovered the mechanism whereby Rac...Melting ice cap gives urgency to new census of marine life project in Arctic Ocean
...ice-covered waters more isolated than those at the edges of the Antarctic continent. Because it is so isolated, scientists have been surprised by the species diversity recognized to date. And they expect to find even more by applying modern technology to the job. "It's certainly not the desert people th...Mimicking humpback whale flippers may improve airplane wing design
...ing investigation of the role of scalloped leading edges on lift increase, drag reduction and stall delay....Guiding gas exploration: U-M research offers inexpensive tool
...earchers showed that freshwater seeping into basin edges from melting ice sheets made it possible for methanogenesis to occur. "The fluids in the Michigan basin are some of the most saline fluids in the world," McIntosh said. "When freshwater penetrated into these basin margins, it suppressed the salinity ...Insights on stroke from the peripheral blood suggest ways to develop markers and therapies
... and an "ischemic penumbra," tissue located at the edges of the infarct zone which could survive from three to six hours because it drew some oxygen and nourishment from surrounding blood vessels. Those animal findings provided the impetus for development of stroke therapies like the clot-busting tissue p...East African artifacts support evolution of symbolic thinking in Middle Stone Age
...g on a fiber or sinew. The strung shell fragments' edges are then smoothed and rounded as a group to produce uniform beads. The site was discovered by project co-director Bower and first test excavated in 1979. Since then the site has been excavated by Bower and Mabulla in 2000 and 2003 as a joint effort ...Structure solved by Scripps scientists shows one way that body controls gene expression
...NA by forming hydrogen bonds with the Watson-Crick edges of the mRNA. "It was remarkable to see how these tiny structures [work]," says Wright. The research article "Recognition of the mRNA AU-rich element by the zinc finger domain of TIS11d" is authored by Brian P. Hudson, Mar...New technologies reveal mysteries of marine megafauna
...end to aggregate near temperature gradients on the edges of warm water masses in the ocean. Mapping the location and depth of these temperature transition zones, and how they move over the course of a day or season, can help identify turtle "hotspots" for fishermen to avoid. Such measures could greatl......tions Shih and Joyce note that because all twelve edges of the octahedral structures have unique sequences, they are versatile molecular building blocks that could potentially be used to self-assemble complex higher-order structures. Possible applications include using these octahedra as artificial compa...Endurance of plants under quartz rocks possible model for life on early Earth, Mars
...s of plant life around those parts of their bottom edges where sunlight could penetrate through the stone at an oblique angle. By placing heat sensors above and below some of the pebbles in all four seasons, the scientists documented that living under the quartz pebbles kept the plants warmer in winter and...160,000-year-old fossilized skulls from Ethiopia are oldest modern humans
...e rear of the cranial base was broken away and the edges polished, and the entire cranium was worn smooth as if by repeated handling. The second adult skull showed parallel scratches around the perimeter of the skull apparently made by a stone tool repeatedly drawn across the skull's surface in a pattern d......ves from sticking to one another by covering their edges with loop-shaped ends. The researchers found that in the mutant proteins, the loops were in the wrong position. This loss of protection appears to lead to the toxic accumulation of proteins in FALS. The finding reveals a new mechanism for research...Rockefeller, Weill Cornell researchers find link between estrogen, brain structure changes
...he first time that estrogen receptors occur at the edges of nerve cells in the CA1 region of the hippocampu...rs are traditionally found. These receptors at the edges of the cells are found on structures known as "dendritic spines" -- the part of the cells that recei...Forests of the continental U.S. continue to fragment
...h three-fourths of all forest found in or near the edges of large, heavily fragmented regional forests," said Riitters. "Most of the large interior forests in the U.S. are publicly owned, or unsuitable for agriculture or urban development. Historic patterns of forest clearing have left relatively little in...Topical oxygen helps hard-to-heal wounds heal faster and better
... see-through plastic bag with edges that adhered to the skin. It was secured around the affected limb or wounded area, and pure oxygen was administered for 90 minutes a day for four days, followed by a three-day rest period...Scientists harness powerful x-rays in new technique to study animal functions
...evealing is edge enhancement, which highlights the edges of some internal organs. This effect is due to the special properties of the x-ray beams at synchrotron facilities, such as the Advanced Photon Source. "It's almost as if parts of the anatomy have been outlined in pencil, like a drawing in a colorin...UC Berkeley scientists detail neural circuit that lets eye detect directional motion
...ed cells in the retina that respond best to moving edges or to moving edges of a particular orientation. There may be a dozen or more types of these specialized ganglion cells....Fragmentation may be linked to local amphibian extinctions
... transferred the larvae to artificial pools on the edges between forest and old fields, and then studied their movements during the first two months after metamorphosis. While small-mouthed salamanders showed no preference for forest or old field, the researchers found that the other two species studied m......ent DNA molecules. This makes it easier to use and edges such motors closer to real-life applications in the rapidly emerging field of bionanotechnology, Tan said. Compared to other DNA motors, our nanomotor is more practical, Tan said. The first use of DNA motors is already beginning to emerge in the form...