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...most recent study to examine the addictive quality of fattening foods was published online March 28 by the journal Nature Neuroscience. For the paper, researchers at the Scripps Research Institute in Jupiter, Fla., examined three groups of lab rats that were fed various diets for 40 days. One group was given typical rat chow only; a second group was offered rat chow, plus a buffet of bacon, sausage, cheesecake, chocolate frosting and other delectable goodies for one hour a day; and a third group was allowed extended access to the fatty buffet for up to 23 hours...
While Kenny's research can be read to suggest that simple long-term exposure to enticing foods leads to obesity and reduces the ability to obtain pleasure, there's actually at least one other major factor at play. Consider the living conditions of the rats in the study: solitary cages. Like humans, rats are highly social animals that suffer when deprived of contact with others. But in the experiment, the rats were not only isolated from other rats, but were also given no toys or exercise wheels; their diet options were either monotonous rat chow or cheesecake and bacon...
...one classic rat study by Bruce Alexander, emeritus professor of psychology at Simon Fraser University, researchers measured the impact of the social and physical environment on the risk of morphine addiction. They found that rats kept in small, isolated cages readily chose to self-administer high, frequent doses of morphine. But rats that lived in "Rat Park" - an earthly rat paradise with plenty of friends and potential mates, nesting materials, toys and room to run and play - voluntarily took significantly less morphine, preferring activity with friends and family to getting high. Under some conditions, Rat Park rats took 20 times...
Cheung cites physicist Stephen Hawking, author of A Brief History of Time, as one of his biggest inspirations and likes to say that humans, like dinosaurs, could go extinct—a disaster that space exploration could somehow ameliorate...
...students are now required to babysit their DAPA Nalgenes and keep one hand on the switch at all times in order to achieve a filled container with their choice of water...