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1 .This is Scientific American 60-Second Science. I'm Christopher Intagliata. Got a minute?
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2 .Body odor. The smell of B. O. is unmistakable.
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3 .And the culprit behind that signature stench is a molecule called thioalcohol.
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4 .Our noses are so attuned to it, we can pick up quantities as small as one part per trillion.
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5 .But here's the mystery: How does that stinky substance get there in the first place?
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6 .Well, it turns out bacteria named Staphylococcus hominis is the major perpetrator, along with a few of its relatives.
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7 .Their genes code for enzymes that snip the molecules in our sweat to pieces, creating the offensive thioalcohols, along with bits of food for the bacteria.
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8 .Because, Hey, bacteria gotta eat, too.
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9 .When innocuous E.coli bacteria were given the genes that our B.O.perpetrators have naturally, they, too, could achieve the stank.
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10 .These findings were presented at the annual meeting of the Society for General Microbiology, in Birmingham, in the U.K.
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11 .Not surprisingly, this work was partially funded by Unilever.
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12 .Because now that we've identified these microbial targets, the researchers say, it might be possible to design more effective deodorants.
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13 .Which, instead of crippling all underarm bacteria, dispatch only the most dastardly denizens.
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14 .Smells like profit to me.
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15 .Thanks for the minute, for Scientific American 60-Second Science. I'm Christopher Intagliata.
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