Citata is:
http://www.sciam.com/article.cfm?chanID=sa003&articleID=0007971F-35DF-13C4-B5DF8\
3414B7F0000

"Current issue of Atmospheric Environment. London's Black Cabs exposed
passengers to an average of more than 108,000 ultrafine
particles--microscopic soot 10,000 times smaller than a centimeter that
is particularly dangerous because of its ability to penetrate deep into
the lungs--for every cubic centimeter traveled. Public buses came in
second with around 95,000 particles per cubic centimeter, followed by
cycling at 84,000 particles/cubic centimeter and walking at around
46,000 particles/cubic centimeter".

Reziume tokia, kad vaziuodamas dviraciu prisikvepuoji beveik dvigubai
daugiau tersalu, negu eidamas pestute. O daugiausia ju gauna tie kas
vazineja taksi (automobliu?).

Audrius