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1 .This is Scientific American 60-Second Science. I'm Christopher Intagliata.Got a minute?
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2 .Fruit flies may seem pretty innocuous, to us.
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3 .But in their own little world, male fruit flies are aggressive fighters, who will headbutt and shove each other…even box.
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4 .There is one thing that'll calm them down though: the female touch.
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5 .Researchers raised males with varying amounts of contact with the fruit fly fairer sex.
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6 .And they found that males who'd spent an entire day hanging out with ladies,
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7 .including a chance to copulate were more peaceable than those who had lacked such contact.
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8 .The researchers thought the sex act might be the secret.
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9 .But the sex alone won't do the trick.
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10 .The key to peace was prolonged physical contact with females,
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11 .which causes female pheromones to rub off on the males.
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12 .Those chemical compounds activate about 20 neurons in the male brain,
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13 .which tamp down the brain's aggression circuit, and bingo: no more fighting.
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14 .The results appear in the journal Nature Neuroscience.
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15 .As for human aggression, this study doesn't say much.
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16 .But we do share genes with flies, and our neural circuitry has similarities.
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17 .So the researchers say work on hot-headed flies could someday clue us in to why humans fly into a rage.
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18 .Thanks for the minute, for Scientific American 60-Second Science. I'm Christopher Intagliata.
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