Parents urged to turn off the tube, encourage outdoor play
If mothers of preschoolers perceive their neighborhood as unsafe, their children tend to watch more television, but differ little in amounts of outdoor play or overweight, compared to peers in safer neighborhoods. Drawing from a study of three-year-olds in 20 U.S. cities, researchers reported these findings in the September issue of Pediatrics.
"This is the first study to examine, in a national sample, the relationship between parental perception of neighborhood safety and obesity, physical activity and television viewing in preschool children," said study leader Hillary Burdette, M.D., a pediatrician at The Children’s Hospital of Philadelphia. "Because television viewing is associated with aggression and poorer academic performance in school-aged children, and TV-viewing patterns are established early in life, we decided to study such patterns in preschoolers."
Joey Marie McCool | EurekAlert!
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MPQ scientists achieve long storage times for photonic quantum bits which break the lower bound for direct teleportation in a global quantum network.
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The miniaturization of the current technology of storage media is hindered by fundamental limits of quantum mechanics. A new approach consists in using so-called spin-crossover molecules as the smallest possible storage unit. Similar to normal hard drives, these special molecules can save information via their magnetic state. A research team from Kiel University has now managed to successfully place a new class of spin-crossover molecules onto a surface and to improve the molecule’s storage capacity. The storage density of conventional hard drives could therefore theoretically be increased by more than one hundred fold. The study has been published in the scientific journal Nano Letters.
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With innovative experiments, researchers at the Helmholtz-Zentrums Geesthacht and the Technical University Hamburg unravel why tiny metallic structures are extremely strong
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