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1 .This is Scientific American 60-Second Science. I'm Christopher Intagliata. Got a minute?
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2 .This year, the number of mobile phones on cell networks is expected to surpass the Earth's population.
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3 ."More people now own cell phones than actually have access to working toilets."
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4 .James Meadow, a microbial ecologist at the University of Oregon.
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5 .Hidden in the data is the reality that some people work on their phones¡ on toilets.
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6 .If that grosses you out, consider this:
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7 ."So it turns out we're just really leaky animals.
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8 .We just, we leave our bacteria everywhere we go."
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9 .Including, of course, our phones.
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10 .Meadow and his colleagues took a census of the bacteria on thumbs and index fingers of 17 volunteers, and on their smartphone touch screens.
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11 .Overall, they ID'ed over 7,000 types.
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12 .Looking at just the most common bacteria, those that appear more than 0.1 percent of the time,
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13 .they found an 82 percent similarity between the microbiomes of fingers and phones.
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14 .Meaning our phones are a pretty good mirror of ourselves, microbially, at least.
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15 .The results appear in the journal PeerJ.
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16 ."We have always been covered in bacteria¡ and we will always be covered in bacteria."
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17 .So the fact that our phones are also covered in bacteria is no reason for concern.
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18 .In fact, the researchers say that mobile phones may hold untapped potential as personal microbiome sensors.
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19 .App developers, take note.
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20 .Thanks for the minute, for Scientific American 60-Second Science. I'm Christopher Intagliata.
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