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1 .This is Scientific American 60-Second Science. I'm Christopher Intagliata. Got a minute?
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2 .A baby's cries for food might drive a tired parent to aggravation.
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3 .But some species take more drastic measures.
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4 .Like the burying beetle, Nicrophorus vespilloides,
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5 .which punishes its pesky children by eating them.
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6 .Researchers wanted to get to the bottom of an age-old question in evolutionary biology: the origin of begging.
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7 .Natural selection favors a greedy, well-fed child.
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8 .But it also favors parents who dole out food evenly to their young, and save some for themselves.
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9 .So how do you resolve that parent-child conflict?
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10 .Burying beetles do so by putting the ultimate price on pleading: death.
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11 .Begging larvae were 13 times more likely than laid-back larvae to be eaten by mom.
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12 .Which may discourage them from asking for more than their fair share of the grub.
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13 .That finding appears in the journal Behavioral Ecology.
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14 .Humans have different standards than beetles do, of course.
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15 .For us, pestering your parents may be a good thing.
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16 .One study suggests crying is a sign of good health, which might lower a baby's chances of being neglected or abused.
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17 .Then again, after those first few years, you're probably better off not being a crybaby.
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18 .Thanks for the minute, for Scientific American 60-Second Science. I'm Christopher Intagliata.
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