Culture

Ever since Bram Cohen invented BitTorrent, Web traffic has never been the same. Whether that's a good thing or a bad thing, however, is a matter of debate.

Peer-to-peer networking, or P2P, has become the method of choice for sharing music and videos. While initially used to share pirated material, the system is now used by NBC, BBC and others to deliver legal video content and by Hollywood studios to distribute movies online. Experts estimate that peer-to-peer systems generate 50 to 80 percent of all Internet traffic. Most predict that number will keep going up.

Do you know someone who claims to remember their first day of kindergarten? Or a trip they took as a toddler? While some people may be able to recall trivial details from the past, laboratory research shows that the human memory can be remarkably fragile and even inventive.

In fact, people can easily create false memories of their past and a new study shows that such memories can have long-term effects on our behavior.

WASHINGTON -- Since the terrorist attacks of 2001, the Bureau of Reclamation (BOR), which operates and manages dams that provide water and power to millions of people, has invested significant resources in security and is better able to protect its facilities and personnel, says a new report from the National Research Council. However, BOR needs better communication among security staff, regional and area office staff, and local law enforcement personnel; security plans that are designed to meet realistic, site-specific threats; and more consistent support within the organization.

TORONTO, ON. – Individuals with a more senior level of job authority have higher levels of interpersonal conflict according to new research out of the University of Toronto.

The study conducted by Scott Schieman, a professor of sociology at the University of Toronto and Sarah Reid, a PhD candidate, involved data from a 2005 sample of 1,785 working adults in the United States. This is the first study of a nationally representative sample that documents the link between power and conflict in the workplace across a broad cross-section of jobs and sectors.

INDIANAPOLIS -- Chronic lead poisoning, caused in part by the ingestion of contaminated dirt, affects hundreds of thousands more children in the United States than the acute lead poisoning associated with imported toys or jewelry. Could treating contaminated soil with water prevent this public health scourge?

OAK BROOK, Ill. – Repeat exams using widely available and inexpensive ultrasound imaging could help identify patients at high risk for a heart attack or other adverse cardiovascular events, according to a study published in the September issue of the journal Radiology.

Clinical studies that are designed by pharmaceutical companies to promote use of their drugs are called "seeding" trials. While much has been written about the marketing tactics of the pharmaceutical industry, seeding trials have not been characterized in depth.

A new study finds strong documentary evidence of how a pharmaceutical company framed a marketing effort as a clinical trial. Researchers reviewed internal documents that became public during litigation against the drug manufacturer.

The impact of global warming in the Arctic may differ from the predictions of computer models of the region, according to a pair of Penn State biologists. The team -- which includes Eric Post, a Penn State associate professor of biology, and Christian Pederson, a Penn State graduate student -- has shown that grazing animals will play a key role in reducing the anticipated expansion of shrub growth in the region, thus limiting their predicted and beneficial carbon-absorbing effect.

The study, by researchers from the University of Melbourne and University College London, is set to be published in the journal Proceedings of the National Academy of Sciences of the USA. (Media embargo applied until 7am Tuesday 19 August Australian Eastern Standard Time)

The study investigated the number skills of children from two Indigenous communities – a group of Warlpiri speakers in the Tanami Desert, north west of Alice Springs, and Anindilyakawa speakers from Groote Eylandt in the Gulf of Carpentaria – and a group of Indigenous preschool children from Melbourne.

DALLAS – Aug. 18, 2008 – An infectious ocean-dwelling bacterium found in oysters and other shellfish kills its host's cells by causing them to burst, providing the invader with a nutrient-rich meal, researchers at UT Southwestern Medical Center have found.

The bacterium, a relative of the one that causes cholera, co-opts and makes fatal a normal cell process that starving or stressed organisms use to disassemble and recycle expendable proteins into more vital metabolites.

Knowing the words for numbers is not necessary to be able to count, according to a new study of aboriginal children by UCL (University College London) and the University of Melbourne. The study of the aboriginal children – from two communities which do not have words or gestures for numbers – found that they were able to copy and perform number-related tasks. The findings, published in the journal PNAS, suggest that we possess an innate mechanism for counting, which may develop differently in children with dyscalculia.

CHAPEL HILL – Families with disabled children are struggling to keep food on the table, a roof over their heads, and to pay for needed health and dental care. But according to a new study from the University of North Carolina at Chapel Hill, these challenges are now falling on middle-income households and not just on poor families as previous research has found.

Honey bees industriously bring pollen and nectar to the hive, but along with the bounty comes a wide variety of pesticides, according to Penn State researchers. Add the outside assault to the pesticides already in the waxy structure of the hive, and bee researchers see a problem difficult to evaluate and correct. However, an innovative approach may mitigate at least some beeswax contamination.

BOSTON – More than half of 26,000 students across 70 colleges and universities who completed a survey on suicidal experiences reported having at least one episode of suicidal thinking at some point in their lives. Furthermore, 15 percent of students surveyed reported having seriously considered attempting suicide and more than 5 percent reported making a suicide attempt at least once in their lifetime.

BOSTON – People taking prescription antidepressants appear to drive worse than people who aren't taking such drugs, and depressed people on antidepressants have even more trouble concentrating and reacting behind the wheel.

These were the conclusions of a study released Sunday at the Annual Convention of the American Psychological Association.