New science resources available from the ESA
... may look lush and healthy, but a closer look will reveal that many marshes are overrun by Brazilian pepper (Schinus terebinthifolius), a South American tree that has taken over 280,000 hectares of south Florida. The Ecological Society's fifth edition of Issues in Ecology describes how some foreign plants ...Beetle uses fecal defense against predators
...sture and blocking the sun. That insight did not reveal why predators are repulsed by the fecal thatch, however. The thatch appears to be chemically inert, according to Thomas Eisner, who has made a specialty of explaining the chemical defenses that organisms use to save themselves from harm. Predatory in...Unique study reveals new details on how genes are transcribed
... University of Wisconsin at Madison. "Our studies reveal that RNAP molecules possess different intrinsic tr...ible for mechano-chemical conversion processes and reveal behavior which would be averaged out in traditional bulk experiments." The Berkeley team made their...Scientists move in on genes conferring susceptibility, resistance to cancer
...ncer, suggesting, they say, that mouse studies may reveal genetic markers of susceptibility and resistance to cancer in humans. The researchers also determined that several of the regions discovered are associated with survival time once cancer has developed -- the first such regions ever reported. The ...UW co-hosts conference about healthy weight in adolescent women of color
... between 6 and 17 are overweight. CDC studies also reveal that as many as 40 percent of the nation's high school students are not enrolled in any type of physical education class. "We will promote the concept of healthy, vibrant, young women and move away from an excessive focus on weight, size, and body i...Scientists discover 66-million-year-old dinosaur with a heart
...Alberta, Canada. Since using the 3-D software to reveal Willo's heart, Fisher has also used it to create 3-D images of the fossil's skull, and of remains from other specimens in the museum's collection. It's the first time the software -- developed for medical imaging at the Mayo Clinic -- has been used o...Medical imaging shows dinosaur heart more like bird's or mammal's than reptile's
...the researchers say. What the heart structure can reveal about dinosaurs' activity levels and the cold- v. warm-blooded debate is a question that "begs for more work," Russell said. To that end, the authors urge in their paper that fossil hunters make a point of looking for traces of soft tissue in their ...Biological legacies a key of ecological rebirth after Mount St. Helens eruption
...earances, sterile. Investigations would, however, reveal that even in desolate-looking areas there were often what Franklin began to call "biological legacies" -- whole plants protected by snow, seeds, spores, root balls from which new plants could sprout, even downed trees as well as debris that offered f...DoubleTwist completes the first annotation of the human genome
...pon this accomplishment by processing this data to reveal its most important information -- the genes," said John Couch, Chairman and Chief Executive Officer of DoubleTwist. "Further, we are providing a mechanism for scientists to easily view and mine this information on DoubleTwist.com." "With today...Study reveals enzyme that behaves like a 'quantum inchworm'
...s havepeered under the hood of one such machine to reveal newdetails about the workings of these essential housekeepers. RecBC is an enzyme that works inside the E. coli bacterium.This nanomachine, one one-billionth of a meter in size, is amolecular motor. It moves along DNA, separating the two sidesof the ...Genetic method has promise for assessing environmental cleanup
...e technique works by screening soil for genes that reveal the presence of an enzyme produced by pollution-bu...amples and then search for the specific genes that reveal the enzyme's presence. Detecting the enzyme is made possible because of a genetic tool called a "pri...Computer model to predict toxic algal outbreaks
...aid the computer model could be "interrogated" to reveal the principal factors causing algal blooms. He's now looking to adapt the computer model for other uses, such as the all-important problem in the Murray: salinity. "The cost of salinity to domestic and industrial water users in Adelaide, as estim...A new type of mutation in the human genome
...uman Genetics, researchers from Indiana University reveal a new mechanism for mutation in the human genome by providing evidence that duplicated regions of DNA can be located at chromosomal regions distant to each other. Duplications of DNA in humans have long been known to occur, but they are generally fo...UI researcher validates underpinnings of scientific theory
...te much of the history of animal life on Earth and reveal major evolutionary expansions, as well as major extinctions of life such as may have happened during periodic bombardment of the Earth by comets. "The upshot is that the big picture that has emerged over the past 20-odd years is likely valid, and no...New test for radiation damage to DNA developed at Brookhaven Lab
...ntial of antioxidants to counteract DNA damage, or reveal ways to use radiation more effectively in fighting cancer. "We hope that if we learn how to alter damage to tumor cells, we can improve therapeutic regimens," Sutherland says....Unearthing the secrets of human skeletal remains
...able indication of graves. "Preliminary findings reveal that, unlike overseas police case studies, in Australia there is very little compaction of the soil, which in turn leaves no telltale depressions in the soil," she says. "In winter, vegetation regrowth makes it extremely difficult to detect any pot...Researchers decipher fundamental signal for maleness
...gues used nuclear magnetic resonance technology to reveal the three-dimensional structure of the protein. They found a new kind of DNA binding structure (containing intertwined zinc binding sites) that regulates genes, that is turns them off or on. Whereas the estrogen and testosterone receptors also cont...NIH scientists unravel clues to ebola hemorrhaging
...nes," states Dr. Nabel. This study also begins to reveal the basic mechanisms of how Ebola virus attaches to and enters cells, and future studies will continue to investigate how different regions of the virus surface perform different tasks for the invading microbe....Reefs and atolls of the Australian outback
...n fossils, minerals and geological formations that reveal much about how Earth has changed over time. Dr Nicholas Lemon from Adelaide University's National Centre for Petroleum Geology and Geophysics has been field-mapping a Precambrian reef complex in what is now the Flinders Ranges National Park. The wo......l and ethnographic data available in the Southwest reveal little indication of large-scale fires being deliberately set....