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A roadside poem in Britain is inscribed on a plaque coated with particles of titanium dioxide, which reacts with pollutants to remove them from the air.
via NYT > Books http://ift.tt/1sOqmCv
A roadside poem in Britain is inscribed on a plaque coated with particles of titanium dioxide, which reacts with pollutants to remove them from the air.
via NYT > Books http://ift.tt/1sOqmCv
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