Archive: 26/10/2009

Teacher talk strains voices, especially for women

Teachers tend to spend more time speaking than most professionals, putting them at a greater risk for hurting their voices -- they're 32 times more likely to experience voice problems, according to one study. And unlike singers ...

dateOct 26, 2009 in Other
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Slipper-shaped blood cells

Red blood cells, which make up 45 percent of blood, normally take the shape of circular cushions with a dimple on either side. But they can sometimes deform into an asymmetrical slipper shape. A team of physicists have used ...

dateOct 26, 2009 in General Physics
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