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Stuttering Reflects Irregularities in Brain Setup

Put on a pair of headphones and turn up the volume so that you can’t even hear yourself speak. For those who stutter, this is when the magic happens. Without the ability to hear their own voice, people with this speech impediment no longer stumble over their words--as was recently portrayed in the movie The King’s Speech .

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Salt Boosts Blood Pressure, but via Adrenalin

People with high blood pressure are often told to watch the salt. And it’s long been thought that hypertension related to excess salt is caused by the salt increasing the volume of the blood. Which in turn puts added pressure on the blood vessel walls

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Which Nations Conform Most?

Editor's Note: This article was originally published in Volume 205, Number 6 of Scientific American in December 1961. [More]

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