A new study published in the scientific journal PLOS Biology offers an explanation for a question that has accompanied scientists for decades: Why are about 90% of humans right-handed. In almost every culture, on every continent, and in every historical period examined, most humans prefer to use their right hand. They write with it, eat with it, hold tools with it, and perform delicate tasks with it. Now a new study suggests that t... [6275 chars]
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