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Latest Penn State University Stories

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2008-03-31 16:48:53

Satisfactory sexual intercourse for couples lasts from 3 to 13 minutes, contrary to popular fantasy about the need for hours of sexual activity, according to a survey of U.S. and Canadian sex therapists. Penn State Erie researchers Eric Corty and Jenay Guardiani conducted a survey of 50 full members of the Society for Sex Therapy and Research, which include psychologists, physicians, social workers, marriage/family therapists and nurses who have collectively seen thousands of patients over...

2008-03-12 14:35:07

An international science team from Penn State University in the United States and the University of Southampton in the United Kingdom has developed a process for growing a single-crystal semiconductor inside the tunnel of a hollow optical fiber.  The device adds new electronic capabilities to optical fibers, whose performance in electronic devices such as computers typically is degraded by the interface between the fiber and the device.  The research is important because optical...

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2006-03-08 18:55:49

PSU -- It came from the edge of the visible universe, the most distant explosion ever detected. In this week's issue of Nature, scientists at Penn State University and their U.S. and European colleagues discuss how this explosion, detected on 4 September 2005, was the result of a massive star collapsing into a black hole. The explosion, called a gamma-ray burst, comes from an era soon after stars and galaxies first formed, about 500 million to 1 billion years after the Big Bang. The...

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2005-11-28 16:30:00

NASA -- The most comprehensive analysis ever performed of the genetic relationships among all the major groups of snakes, lizards, and other scaly reptiles has resulted in a radical reorganization of the family tree of these animals, requiring new names for many of the tree's new branches. The research, reported in the current issue of the journal C. R. Biologies, was performed by two biologists working at Penn State University: S. Blair Hedges, professor of biology, and Nicolas Vidal, a...

2005-09-22 15:39:03

The presence of environmental chemicals in human milk does not necessarily indicate health risks for infants, according to researchers. "We strongly emphasize that the mere presence of an environmental chemical in human milk does not indicate that a health risk exists for breast-fed infants," said Cheston M. Berlin, Jr., M.D., Penn State University professor of pediatrics and pharmacology. "All information gathered to date supports the positive health value of breast-feeding for infants."...

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2005-06-10 06:40:15

Exercise, food consumption, even a common spice may have impact, studies find More evidence is trickling in that aspects of everyday life, including exercise, eating habits and even a common spice, can affect the incidence and course of breast cancer. Three studies chronicling such findings are being presented this week at the Department of Defense Breast Cancer Research Program meeting in Philadelphia. The program is collaboration between the military, scientists, clinicians and breast...

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2005-05-10 12:20:00

Young stars in the Orion Nebula have quite a temper, flashing powerful X-rays every few days. Scientists wonder if such X-ray flares could rough up the calm sea of a proto-planetary disk, and thereby rescue burgeoning planets from certain oblivion. Does a temperamental youth ensure the existence of future planets? NASA -- Orion the Hunter is one of the most easily recognized constellations in the night sky, and lying just beneath his belt is the Orion Nebula, a nursery that cradles about...