Vacationers may be getting more than fresh air and sunshine while laying on the decks of passengerships, according to an environmental study.
A John Hopkins University air quality analysis amid four Carnival Corp cruiseship decks found higher levels of ultra-fine exhaust particulate matter (PM) behind the smokestacks.
"The findings of this study demonstrate that a source of PM -- likely, in part from the ship's exhaust system -- is contributing to poorer air quality in the stern area of these cruiseships," the 18-page report said.
