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第1段
1 .This is Scientific American 60-Second Earth. I'm David Biello. Your minute begins now.
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2 .Can poetry fight air pollution?
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3 .Turns out it can, with the help of nanotechnology.
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4 .Tony Ryan is a polymer chemist at the University of Sheffield.
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5 .He works with tiny particles of titanium dioxide,
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6 .which can use sunlight to suck up smog-forming pollution and purify the air.
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7 .To demonstrate the effect, Ryan attached a poster 20 meters tall and 10 meters wide to the side of a building in Sheffield on May 14th.
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8 .The poster is coated with titanium dioxide and can consume the nitrogen oxide exhaust of about 20 cars per day.
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9 .He argues that every billboard could be similarly treated to suck up pollution at an extra cost of just a few hundred dollars.
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10 .The Sheffield poster comments on its own function.
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11 .Written on it is a new work by poet Simon Armitage entitled "In Praise of Air."
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12 .I'll give him the final words:
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13 ."on days when thoughts are fuddled with smog
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14 .or civilization crosses the street with a white handkerchief over its mouth
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15 .and cars blow kisses to our lips from theirs
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16 .I turn the key, throw back the lid, breathe deep.
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17 .My first word, everyone's first word, was air."
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18 .Your minute is up, for Scientific American 60-Second Earth. I'm David Biello.
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