In the News
Molecular Steps Involved In The Creation Of Gene-silencing MicroRNAs I MicroRNAs are small, remarkably powerful molecules that play a pivotal role in gene silencing. But how do miRNAs arise? In a study published last year in Nature, researchers at The Wistar Institute identified the earliest steps in the creation of miRNAs in the cell nucleus. Now, in a new Nature study, the Wistar group picks up the process in the cell cytoplasm and tracks it through to the maturation of the finished miRNAs. Decrease Cancer-suppressing Protein Activity, Increase Life Span Too much production of the p53 protein shortens life span. Not enough can cause cancer. New research, headed up by Brown University biologist Stephen Helfand, shows that the health benefits of this protective protein can be harnessed - and longer life can be achieved - when its activity is decreased in the neurons of fruit flies. These findings, published in Current Biology, offer the first evidence that p53 can play a positive role in aging. Photo-monitoring Whale Sharks: Largest Fish In The Sea Appear To Thriv Up to 20 meters long and weighing as much as 20 tons, its enormous size gives the whale shark its name. Listed as a rare species, relatively little is known about whale sharks. However, a new study combines computer-assisted photographic identification with ecotourism to study the rare species and suggests whale shark populations in Ningaloo, Western Australia are healthy. The study appears in the Ecological Society of America's January issue of Ecological Applications. Presidents of the United States: Selected Images From the Collections Collection of images of U.S. presidents from the Library of Congress Prints and Photographs Division. View images by president's name in alphabetical order or chronologically by presidential term. Also includes images of selected First Ladies. Includes details about each image, such as creator and date, and information about obtaining and using the images. From the Library of Congress. [Funny] A referee has sent himself off in an English amateur league ma Andy Wain had to abandon the Sunday league match between Peterborough North End and a Royal Mail side in the 63rd minute after throwing down his whistle and marching up to confront North End's keeper. Old Tijuana Virtual Postcard Tour This site provides a "historicallook back at Tijuana, Mexico viewed from the last century, during which it grew considerably on the flow of tourist visitor's dollars."The site features dozens of images of historical postcards and a brief history of Tijuana. Turning a Profit: Free Web Names A growing practice known as domain name "tasting," a form of cyber squatting, ties up millions of domain names at a time, keeping them out of the reach of legit buyers. By the Associated Press. Genetically Engineered Poplar Plants Disarm Toxic Pollutants 100 Times Scientists since the early '90s have seen the potential for cleaning up contaminated sites by growing plants able to take up nasty groundwater pollutants through their roots. Then the plants break certain kinds of pollutants into harmless byproducts that the plants either incorporate into their roots, stems and leaves or release into the air. Experimental poplar plants, several inches tall and growing in a solution laced with the toxic trichloroethylene, were able break down, or metabolize, the pollutant into harmless byproducts at rates 100 times that of the control plants. LII Tip of the Week: Judaism Collection As a little Chanukah gift to our readers, we are proud to announce our new page on Judaism. Topics include food, genealogy, history, Holocaust, holidays, and much more. Bon appetit! Handbook On Pay and Leave Benefits For Federal Employees Affected By S "Provides a general summary of the many pay and leave benefits available to assist Federal agencies and employees who must cope with severe weather emergencies or other emergency situations and their aftermath. ... Since many of the benefits discussed in this Handbook may be granted at the discretion of each employing agency, employees should contact their agency's human resources office for further information."Opens directly into a PDF file. From the U.S. Office of Personnel Management (OPM).
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