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This is Scientific American 60-Second Science. I'm Christopher Intagliata. Got a minute?
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A 2014 analysis found that New York City's Queens was the most ethnically diverse county in the continental U.S.
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But when it comes to the diversity of DNA found in each borough's subway stops--the Bronx takes the prize.
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"I live in Brooklyn so I was kind of hoping Brooklyn might be top of the list but we're second place.
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Manhattan in the middle. And then Queens, and then Staten Island."
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Christopher Mason, a geneticist "a very curious geneticist, I'd say" at the Weill Cornell Medical College in Manhattan.
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Mason's curiosity led him and his colleagues on a five-borough tour of New York's 468 subway stations, and the Staten Island Railway.
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They swabbed turnstiles, kiosks, benches, trash cans, railings and subway cars, then sequenced every bit of DNA they found.
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The result? "The subway kind of looks like skin."
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Meaning they found a whole lot of bacteria, like Pseudomonas, that also live on our skin.
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The DNA at each subway stop mirrored the genetic diversity of the local residents , and, what they like to eat.
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"We could see other evidence of things like molecular echoes of pizza.
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Cucumbers, as well as chickpeas that might be from falafels or hummus."
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The researchers also found DNA fragments from anthrax and plague bacteria.
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But don't panic.
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"We have zero evidence that they're alive or remotely pose a risk to public health."
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The team turned up some 1,700 organisms in total.
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But nearly half the DNA they sequenced could not be linked to any known organism.
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Assuming there's no actual Men In Black-type extraterrestrial police agency operating underground in Manhattan,
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the unknown DNA means that we either haven't discovered some subway dwellers or maybe we just haven't sequenced their DNA yet.
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The study is in the journal Cell Systems.
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Despite the mysterious genetic sequences, Mason says the research has made his commute a little more carefree.
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"And the study has replaced what used to be sort of a fog of almost fear maybe about what might be on the surface to concrete knowledge that the vast majority of everything under our fingerprints is mostly benign, so, I've become much more confident."
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Thanks for the minute, for Scientific American's 60-Second Science. I'm Christopher Intagliata.
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显示原文 =This is Scientific American 60-Second Science. I'm Christopher Intagliata. Got a minute?
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显示原文 =A 2014 analysis found that New York City's Queens was the most ethnically diverse county in the continental U.S.
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3 / 24
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显示原文 =But when it comes to the diversity of DNA found in each borough's subway stops--the Bronx takes the prize.
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显示原文 ="I live in Brooklyn so I was kind of hoping Brooklyn might be top of the list but we're second place.
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5 / 24
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显示原文 =Manhattan in the middle. And then Queens, and then Staten Island."
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显示原文 =Christopher Mason, a geneticist "a very curious geneticist, I'd say" at the Weill Cornell Medical College in Manhattan.
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7 / 24
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显示原文 =Mason's curiosity led him and his colleagues on a five-borough tour of New York's 468 subway stations, and the Staten Island Railway.
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8 / 24
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显示原文 =They swabbed turnstiles, kiosks, benches, trash cans, railings and subway cars, then sequenced every bit of DNA they found.
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9 / 24
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显示原文 =The result? "The subway kind of looks like skin."
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10 / 24
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显示原文 =Meaning they found a whole lot of bacteria, like Pseudomonas, that also live on our skin.
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11 / 24
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显示原文 =The DNA at each subway stop mirrored the genetic diversity of the local residents , and, what they like to eat.
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12 / 24
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显示原文 ="We could see other evidence of things like molecular echoes of pizza.
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13 / 24
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显示原文 =Cucumbers, as well as chickpeas that might be from falafels or hummus."
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14 / 24
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显示原文 =The researchers also found DNA fragments from anthrax and plague bacteria.
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15 / 24
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显示原文 =But don't panic.
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显示原文 ="We have zero evidence that they're alive or remotely pose a risk to public health."
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17 / 24
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显示原文 =The team turned up some 1,700 organisms in total.
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18 / 24
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显示原文 =But nearly half the DNA they sequenced could not be linked to any known organism.
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19 / 24
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显示原文 =Assuming there's no actual Men In Black-type extraterrestrial police agency operating underground in Manhattan,
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20 / 24
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显示原文 =the unknown DNA means that we either haven't discovered some subway dwellers or maybe we just haven't sequenced their DNA yet.
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21 / 24
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显示原文 =The study is in the journal Cell Systems.
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显示原文 =Despite the mysterious genetic sequences, Mason says the research has made his commute a little more carefree.
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显示原文 ="And the study has replaced what used to be sort of a fog of almost fear maybe about what might be on the surface to concrete knowledge that the vast majority of everything under our fingerprints is mostly benign, so, I've become much more confident."
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显示原文 =Thanks for the minute, for Scientific American's 60-Second Science. I'm Christopher Intagliata.
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- 单句循环：关
- 单句循环：×3
- 单句循环：×5
- 单句循环：∞