Urbanized Watersheds More Sensitive To Climate Change
..., according to a Penn State researcher. "There have been a great many studies of stream flow, temperature and precipitation, but they have all been done on undeveloped watersheds that are minimally impacted by humans," says Dr. David De W...Pinpoint Gene Control Holds Promise For Nervous System Studies
Scientists have taken their control over genes one stepfurther by ...py. "The most ideal way to study a gene is to have the abilityto turn on or off that gene at any time that you wish, at anyplace that you wish. This ne...New Finding Suggests "HATs" Are Key To Gene Activation Puzzle
Biologists have long sought to better understand thepuzzling process that turns genes on. Now, they have uncovered evidence that adds significantly to the developingpicture of how genes are activated. The ...Prostate Cancer May Be Predicted 10 Years Before Diagnosis
...in serum. Men whose total PSA levels are high may have prostate cancer or benign prostatic hypertrophy (BPH), an enlarged prostate gland. Earlier studies have found that the rate of increase in total PSA levels over several years is one of the best indicators...A Sensor, A Switch, A Zipper: Protein Engineers Design Potential Tool
... at the University of California, Berkeley have designed a protein that toggles between two different structures upon binding a small molecule. The designed property is significant because many biological processes depend on a protein's ability to change its shape i...Proteins Interacting With RNA And DNA Are Surprisingly Similar
...a class of proteins that bind to DNA. The proteins have the same general shape, and they use a similarmeth...similarities came as a surprisebecause theproteins have completely different functions, and they attach todifferentstructures -- the double-stranded, ladder...ORNL Mice Helping Researchers Isolate, Identify Causes Of Cancer
OAK RIDGE, Tenn. -- Mice may have a reputation for beingquiet, but they're telling r...L's BiologyDivision. "In addition, mouse lymphomas have genetic characteristics thatallow us to isolate the genes involved in the development of the cancer....New Nonviral Gene Therapy System Could Help Fight Cancer
...-fighting genes into tumor cells. Scientists have successfully used the T7T7 gene therapysystem, com...iversity and aninventor of the T7 system. "We have expressed more than 30 different types of genesusing the T7 system, including genes that promote ant...Selenium Supplements Can Reduce Cancer Rates
...ed of animal and dozens of epidemiological studies have linked high selenium status and cancer risk, this ...ke). Skin cancer patients were chosen because they have a 25 percent annual chance of a recurrence, and skin cancer is easy to diagnose and can be quickly t...Bog Beetle, Misidentified For 85 Years, Is 'Discovered' At Cornell
...astern United States and Canada, Will and Liebherr have found that this beetle's natural range extends fro...r said. "New York state and the surrounding areas have these things that are unique to our region, and they are worth protecting. We've been here in the N...Bottom-up Ecological Processes Better For Clear Waters, Study Finds
...lakes, Universityof California, Davis, researchers have made a bottom-line discovery. Tinkering with food...lantsat the bottom of the food chain. Limnologists have long recognized thatnitrogen (typically from sewage and fertilizer) and phosphorus (from nearbyconst...ORNL Finds Common Genetic Cause For Epilepsy, Migraine
OAK RIDGE, Tenn. -- Migraine and epilepsy have more in commonthan researchers thought, says Lisa ...cnl1a4 gene foundin mutant "tottering" mice, which have been studied extensively as modelsfor human epilepsy. The specific region of the mouse gene has a co...The CIA Would Like To Know What Scientists Are Seeing Over The Rainbow
...he vibrant land of Oz, wizards of a different sort have concocted a powerful new way to visualize the full...a pieces, or parts from different chromosomes that have swapped places. The technique could prove to be extremely valuable in diagnosis of disease based on...Laser Microscope At Cornell Images Serotonin In Live Cells
... laser-microscope technology developed at Cornell, have produced images displaying the neurotransmitter serotonin in live cells in real time, and they have for the first time measured the concentration of serotonin in secretory granules. The microscope, wh...Researchers Corral Millions Of Microscopic Membranes
Scientists at Stanford University have done the next best thing to packaging living cells...iques from electrical engineering, the researchers have created a specially prepared surface that holds millions of cell-sized squares composed of an artifi...Penn State Wetlands Project Seeks Scientific Evaluation Criteria
...study of 51 natural wetland sites in Pennsylvania have shown this to be true. Brooks, director of the ...ofessionals evaluate restored or created wetlands have been developed during the study. "A wetland is an elusive thing to categorize," Brooks says. "The b...Birds Deal With "Cocktail Party Effect"
It may seem intuitively simple, but scientists have beenpuzzled by how the human brain is able to selectively focus onone voice from among the tangle of other voices and sounds. Newfindings are providing evidence that humans are not alone in thatability. Like humans, birds can easily pick out and...Learning From Birds And Bees: Engineers Study Insects For Ideas On Tiny "Micro Air Vehicles"
...ings may be significantly differentfrom those that have guided aircraft design since the Wright Brothers'1...efficient motion in an aircraft thissmall. We may have to learn from insects and birds." Beyond basic aerodynamic techniques, severe weight restrictionsde......ormation function of theformer Bureau of Mines, we have taken on some exciting newresponsibilities. With these responsibilities has come the opportunity tojoin with hundreds of new cooperators in every state and more than 100countries to produce the credible, reliable and impartial informationneeded to s...Stronger Evidence That Global Climate Change Can Reduce The Variety Of Life
...y (Feb. 13, 1997). "For the first time, we have been able to plot the ups and downs inbiodiversity in a particular group of animals through 11 complete periodsof drastic global climate change," said Dr. Thomas M. Cronin, researchgeologist with the U.S. Geological Survey. "The rise and fall in the...