Fish Can Determine Their Social Rank By Observation Alone, Study Finds:
A male fish can size up potential rivals, and even rank them from strongest to weakest, simply by watching how they perform in territorial fights with other males, according to a new study by Stanford University scientists. The researchers say their discovery provides the first direct evidence that fish, like people, can use logical reasoning to figure out their place in the pecking order.
Genetic Evaluations Help Breed Better Bossies:
Breeding dairy cattle is an inexact science, so many gene-linked traits must be considered. Some of the major ones are quantity of milk produced, its fat and protein content, mothers' pregnancy rates, calving ease and, most recently, stillbirth rate. Such evaluating of genetic traits has allowed dairy farmers to increase milk production to all-time highs.
Living Near A Highway Affects Lung Development In Children, Study Shows:
Children who live near a major highway are not only more likely to develop asthma or other respiratory diseases, but their lung development may also be stunted. According to a study that will appear in the February 17 issue of The Lancet and now available online, researchers at the Keck School of Medicine of the University of Southern California (USC) found that children who lived within 500 meters of a freeway, or approximately a third of a mile, since age 10 had substantial deficits in lung function by the age of 18 years, compared to children living at least 1500 meters, or approximately one mile, away.
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